预定义常量

下列常量由此扩展定义,且仅在此扩展编译入 PHP 或在运行时动态载入时可用。

curl_setopt()curl_multi_setopt()curl_getinfo() 文档中常量的描述和使用。

CURLFTP_CREATE_DIR (int)
自 PHP 7.0.7 和 cURL 7.19.3 起可用
CURLFTP_CREATE_DIR_NONE (int)
自 PHP 7.0.7 和 cURL 7.19.3 起可用
CURLFTP_CREATE_DIR_RETRY (int)
自 PHP 7.0.7 和 cURL 7.19.3 起可用
CURLFTPSSL_TRY (int)
CURLFTPSSL_ALL (int)
CURLFTPSSL_CONTROL (int)
CURLFTPSSL_NONE (int)
CURLFTPMETHOD_DEFAULT (int)
自 PHP 8.2.0 和 cURL 7.15.3 起可用。
CURLALTSVC_H1 (int)
自 PHP 8.2.0 和 cURL 7.64.1 起可用。
CURLALTSVC_H2 (int)
自 PHP 8.2.0 和 cURL 7.64.1 起可用。
CURLALTSVC_H3 (int)
自 PHP 8.2.0 和 cURL 7.64.1 起可用。
CURLALTSVC_READONLYFILE (int)
自 PHP 8.2.0 和 cURL 7.64.1 起可用。
CURL_SSLVERSION_DEFAULT (int)
CURL_SSLVERSION_TLSv1 (int)
CURL_SSLVERSION_SSLv2 (int)
CURL_SSLVERSION_SSLv3 (int)
CURL_SSLVERSION_TLSv1_0 (int)
CURL_SSLVERSION_TLSv1_1 (int)
CURL_SSLVERSION_TLSv1_2 (int)
CURL_SSLVERSION_TLSv1_3 (int)
自 PHP 7.3.0 和 cURL 7.52.0 起可用。
CURLHSTS_ENABLE (int)
自 PHP 8.2.0 和 cURL 7.74.0 起可用
CURLHSTS_READONLYFILE (int)
自 PHP 8.2.0 和 cURL 7.74.0 起可用
CURLAUTH_BASIC (int)
CURLAUTH_DIGEST (int)
CURLAUTH_GSSNEGOTIATE (int)
CURLAUTH_NEGOTIATE (int)
自 PHP 7.0.7 和 cURL 7.38.0 起可用。
CURLAUTH_NTLM (int)
CURLAUTH_NTLM_WB (int)
自 PHP 7.0.7 和 cURL 7.22.0 起可用
CURLAUTH_ANY (int)
CURLAUTH_ANYSAFE (int)
CURLAUTH_AWS_SIGV4 (int)
自 PHP 8.2.0 和 cURL 7.75.0 起可用。
CURLPX_BAD_ADDRESS_TYPE (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_BAD_VERSION (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_CLOSED (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_GSSAPI (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_GSSAPI_PERMSG (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_GSSAPI_PROTECTION (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_IDENTD_DIFFER (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_IDENTD (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_LONG_HOSTNAME (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_LONG_PASSWD (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_LONG_USER (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_NO_AUTH (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_OK (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_RECV_ADDRESS (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_RECV_AUTH (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_RECV_CONNECT (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_RECV_REQACK (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_REPLY_ADDRESS_TYPE_NOT_SUPPORTED (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_REPLY_COMMAND_NOT_SUPPORTED (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_REPLY_CONNECTION_REFUSED (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_REPLY_GENERAL_SERVER_FAILURE (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_REPLY_HOST_UNREACHABLE (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_REPLY_NETWORK_UNREACHABLE (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_REPLY_NOT_ALLOWED (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_REPLY_TTL_EXPIRED (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_REPLY_UNASSIGNED (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_REQUEST_FAILED (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_RESOLVE_HOST (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_SEND_AUTH (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_SEND_CONNECT (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_SEND_REQUEST (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_UNKNOWN_FAIL (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_UNKNOWN_MODE (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLPX_USER_REJECTED (int)
自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURL_PUSH_OK (int)
自 PHP 7.1.0 和 cURL 7.44.0 起可用
CURL_PUSH_DENY (int)
自 PHP 7.1.0 和 cURL 7.44.0 起可用
CURL_REDIR_POST_301 (int)
自 PHP 7.0.7 和 cURL 7.18.2 起可用
CURL_REDIR_POST_302 (int)
自 PHP 7.0.7 和 cURL 7.18.2 起可用
CURL_REDIR_POST_303 (int)
自 PHP 7.0.7 和 cURL 7.25.1 起可用
CURL_REDIR_POST_ALL (int)
自 PHP 7.0.7 和 cURL 7.18.2 起可用
CURL_TIMECOND_NONE (int)
CURL_TIMECOND_IFMODSINCE (int)
CURL_TIMECOND_IFUNMODSINCE (int)
CURL_TIMECOND_LASTMOD (int)
CURL_VERSION_ALTSVC (int)
自 PHP 7.3.6 和 cURL 7.64.1 起可用
CURL_VERSION_ASYNCHDNS (int)
异步 DNS 解析。 自 PHP 7.3.0 和 cURL 7.10.7 起可用
CURL_VERSION_BROTLI (int)
自 PHP 7.3.0 和 cURL 7.57.0 起可用
CURL_VERSION_CONV (int)
字符转换支持。 自 PHP 7.3.0 和 cURL 7.15.4 起可用
CURL_VERSION_CURLDEBUG (int)
调试内存跟踪支持。 自 PHP 7.3.6 和 cURL 7.19.6 起可用
CURL_VERSION_DEBUG (int)
内置调试功能。 自 PHP 7.3.0 和 cURL 7.10.6 起可用
CURL_VERSION_GSASL (int)
自 PHP 8.2.0 和 cURL 7.76.0 起可用
CURL_VERSION_GSSAPI (int)
基于 GSS-API 库构建。 自 PHP 7.3.0 和 cURL 7.38.0 起可用
CURL_VERSION_GSSNEGOTIATE (int)
支持 协商(Negotiate)身份验证。 自 PHP 7.3.0 和 cURL 7.10.6 起可用(自 7.38.0 起弃用)
CURL_VERSION_HSTS (int)
自 PHP 8.2.0 和 cURL 7.74.0 起可用
CURL_VERSION_IDN (int)
国际化域名支持。 自 PHP 7.3.0 和 cURL 7.12.0 起可用
CURL_VERSION_MULTI_SSL (int)
自 PHP 7.3.0 和 cURL 7.56.0 起可用
CURL_VERSION_NTLM (int)
NTLM 身份验证支持。 自 PHP 7.3.0 和 cURL 7.10.6 起可用
CURL_VERSION_NTLM_WB (int)
支持 NTLM 委派给 winbind 助手。 自 PHP 7.3.0 和 cURL 7.22.0 起可用
CURL_VERSION_IPV6 (int)
启用 IPv6。
CURL_VERSION_KERBEROS4 (int)
Kerberos V4 身份验证支持。
CURL_VERSION_KERBEROS5 (int)
Kerberos V5 身份验证支持。 自 PHP 7.0.7 和 cURL 7.40.0 起可用
CURL_VERSION_HTTP2 (int)
内置 HTTP2 支持。 自 cURL 7.33.0 起可用
CURL_VERSION_HTTP3 (int)
自 PHP 8.2.0 和 cURL 7.66.0 起可用
CURL_VERSION_LARGEFILE (int)
支持大于 2GB 的文件。 自 cURL 7.33.0 起可用
CURL_VERSION_PSL (int)
Mozilla 的公共后缀列表,用于 cookie 域验证。 自 PHP 7.3.6 和 cURL 7.47.0 起可用
CURL_VERSION_SPNEGO (int)
SPNEGO 身份验证支持。 自 PHP 7.3.0 和 cURL 7.10.8 起可用
CURL_VERSION_SSPI (int)
基于 Windows SSPI 构建。 自 PHP 7.3.0 和 cURL 7.13.2 起可用
CURL_VERSION_SSL (int)
存在 SSL 选项。
CURL_VERSION_TLSAUTH_SRP (int)
TLS-SRP 身份验证支持。 自 PHP 7.3.0 和 cURL 7.21.4 起可用
CURL_VERSION_UNICODE (int)
自 PHP 8.2.0 和 cURL 7.72.0 起可用
CURL_VERSION_UNIX_SOCKETS (int)
Unix 域套接字支持。 自 PHP 7.0.7 和 cURL 7.40.0 起可用
CURL_VERSION_ZSTD (int)
自 PHP 8.2.0 和 cURL 7.72.0 起可用
CURL_VERSION_LIBZ (int)
存在 libz 功能。
CURLVERSION_NOW (int)
CURLFTPAUTH_DEFAULT (int)
CURLFTPAUTH_SSL (int)
CURLFTPAUTH_TLS (int)
CURLPROXY_HTTP (int)
自 cURL 7.10 起可用。
CURLPROXY_HTTP_1_0 (int)
自 PHP 7.0.7 和 cURL 7.19.3 起可用
CURLPROXY_SOCKS4 (int)
自 cURL 7.10 起可用。
CURLPROXY_SOCKS5 (int)
自 cURL 7.10 起可用。
CURL_NETRC_OPTIONAL (int)
CURL_NETRC_IGNORED (int)
CURL_NETRC_REQUIRED (int)
CURL_HTTP_VERSION_NONE (int)
CURL_HTTP_VERSION_1_0 (int)
CURL_HTTP_VERSION_1_1 (int)
CURL_HTTP_VERSION_2 (int)
自 PHP 7.0.7 和 cURL 7.43.0 起可用
CURL_HTTP_VERSION_2_0 (int)
自 cURL 7.33.0 起可用
CURL_HTTP_VERSION_2TLS (int)
自 PHP 7.0.7 和 cURL 7.47.0 起可用
CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE (int)
自 PHP 7.0.7 和 cURL 7.49.0 起可用
CURLMSG_DONE (int)
CURLSSLOPT_ALLOW_BEAST (int)
自 cURL 7.25.0 起可用
CURLSSLOPT_NO_REVOKE (int)
自 PHP 7.0.7 和 cURL 7.44.0 起可用
CURLSSLOPT_AUTO_CLIENT_CERT (int)
自 PHP 8.2.0 和 cURL 7.77.0 起可用
CURLSSLOPT_NATIVE_CA (int)
自 PHP 8.2.0 和 cURL 7.71.0 起可用
CURLSSLOPT_NO_PARTIALCHAIN (int)
自 PHP 8.2.0 和 cURL 7.68.0 起可用
CURLSSLOPT_REVOKE_BEST_EFFORT (int)
自 PHP 8.2.0 和 cURL 7.70.0 起可用
CURLSSH_AUTH_AGENT (int)
自 PHP 7.0.7 和 cURL 7.28.0 起可用
CURLSSH_AUTH_ANY (int)
CURLSSH_AUTH_DEFAULT (int)
CURLSSH_AUTH_HOST (int)
CURLSSH_AUTH_KEYBOARD (int)
CURLSSH_AUTH_NONE (int)
CURLSSH_AUTH_PASSWORD (int)
CURLSSH_AUTH_PUBLICKEY (int)
CURLPIPE_NOTHING (int)
自 cURL 7.43.0 起可用。
CURLPIPE_HTTP1 (int)
自 cURL 7.43.0 起可用。
CURLPIPE_MULTIPLEX (int)
自 cURL 7.43.0 起可用。
CURLPROXY_SOCKS4A (int)
自 cURL 7.18.0 起可用。
CURLPROXY_SOCKS5_HOSTNAME (int)
自 cURL 7.18.0 起可用。
CURLHEADER_SEPARATE (int)
自 PHP 7.0.7 和 cURL 7.37.0 起可用.
CURLHEADER_UNIFIED (int)
自 PHP 7.0.7 和 cURL 7.37.0 起可用.
CURLAUTH_GSSAPI (int)
自 PHP 7.3.0 和 cURL 7.54.1 起可用
CURL_MAX_READ_SIZE (int)
自 PHP 7.3.0 和 cURL 7.53.0 起可用
CURLPROXY_HTTPS (int)
自 PHP 7.3.0 和 cURL 7.52.0 起可用
CURL_SSLVERSION_MAX_DEFAULT (int)
自 PHP 7.3.0 和 cURL 7.54.0 起可用
CURL_SSLVERSION_MAX_NONE (int)
自 PHP 7.3.0 和 cURL 7.54.0 起可用
CURL_SSLVERSION_MAX_TLSv1_0 (int)
自 PHP 7.3.0 和 cURL 7.54.0 起可用
CURL_SSLVERSION_MAX_TLSv1_1 (int)
自 PHP 7.3.0 和 cURL 7.54.0 起可用
CURL_SSLVERSION_MAX_TLSv1_2 (int)
自 PHP 7.3.0 和 cURL 7.54.0 起可用
CURL_SSLVERSION_MAX_TLSv1_3 (int)
自 PHP 7.3.0 和 cURL 7.54.0 起可用
CURL_VERSION_HTTPS_PROXY (int)
自 PHP 7.3.0 和 cURL 7.52.0 起可用
CURLAUTH_BEARER (int)
自 PHP 7.3.0 和 cURL 7.61.0 起可用。
CURLSSH_AUTH_GSSAPI (int)
自 PHP 7.3.0 和 cURL 7.58.0 起可用
CURLMIMEOPT_FORMESCAPE (int)
自 PHP 8.3.0 和 cURL 7.81.0 起可用
CURLWS_RAW_MODE (int)
自 PHP 8.3.0 和 cURL 7.86.0 起可用
CURLKHMATCH_OK (int)
自 PHP 8.3.0 和 cURL 7.19.6 起可用
CURLKHMATCH_MISMATCH (int)
自 PHP 8.3.0 和 cURL 7.19.6 起可用
CURLKHMATCH_MISSING (int)
自 PHP 8.3.0 和 cURL 7.19.6 起可用
CURLKHMATCH_LAST (int)
自 PHP 8.3.0 和 cURL 7.19.6 起可用
curl-setopt()
常量 描述
CURLOPT_ABSTRACT_UNIX_SOCKET (int)

允许使用抽象 Unix 域套接字而不是与主机建立 TCP 连接,并将路径设置为指定 string。此选项与 CURLOPT_UNIX_SOCKET_PATH 具有相同的语义。这两个选项共享相同的存储,因此每个句柄只能设置其中一个。自 PHP 7.3.0 和 cURL 7.53.0 起可用

CURLOPT_ACCEPT_ENCODING (int)

设置 string,其中包含 HTTP 请求中发送的 Accept-Encoding: 标头的内容。设置为 null 可禁用发送 Accept-Encoding: 标头。默认为 null。自 cURL 7.21.6 起可用。

CURLOPT_ACCEPTTIMEOUT_MS (int)

The maximum number of milliseconds to wait for a server to connect back to cURL when an active FTP connection is used. This option accepts any value that can be cast to a valid int. Defaults to 60000 milliseconds. Available as of cURL 7.24.0.

CURLOPT_ADDRESS_SCOPE (int)

The scope id value to use when connecting to IPv6 addresses. This option accepts any value that can be cast to a valid int. Defaults to 0. Available as of cURL 7.19.0.

CURLOPT_ALTSVC (int)

Pass the filename for cURL to use as the Alt-Svc cache file to read existing cache contents from and possibly also write it back to a after a transfer, unless CURLALTSVC_READONLYFILE is set via CURLOPT_ALTSVC_CTRL. Available as of PHP 8.2.0 and cURL 7.64.1.

CURLOPT_ALTSVC_CTRL (int)

Populate the bitmask with the correct set of features to instruct cURL how to handle Alt-Svc for the transfers using this handle. cURL only accepts Alt-Svc headers over HTTPS. It will also only complete a request to an alternative origin if that origin is properly hosted over HTTPS. Setting any bit will enable the alt-svc engine. The options are: CURLALTSVC_H1, CURLALTSVC_H2, CURLALTSVC_H3, and CURLALTSVC_READONLYFILE. Available as of PHP 8.2.0 and cURL 7.64.1.

CURLOPT_APPEND (int)

Setting this option to 1 will cause FTP uploads to append to the remote file instead of overwriting it. Defaults to 0. Available as of cURL 7.17.0.

CURLOPT_AUTOREFERER (int)

true to automatically set the Referer: field in requests where it follows a Location: redirect.

CURLOPT_AWS_SIGV4 (int)

Provides AWS V4 signature authentication on HTTP(S) header. This option overrides any other authentication types that have been set in CURLOPT_HTTPAUTH. This method cannot be combined with other authentication types. Available as of PHP 8.2.0 and cURL 7.75.0

CURLOPT_BINARYTRANSFER (int)

CURLOPT_BUFFERSIZE (int)

The size of the buffer to use for each read. There is no guarantee this request will be fulfilled, however. Available as of cURL 7.10.

CURLOPT_CAINFO (int)

The name of a file holding one or more certificates to verify the peer with. This only makes sense when used in combination with CURLOPT_SSL_VERIFYPEER. Might require an absolute path.

CURLOPT_CAINFO_BLOB (int)

The name of a PEM file holding one or more certificates to verify the peer with. This option overrides CURLOPT_CAINFO. Available as of PHP 8.2.0 and cURL 7.77.0

CURLOPT_CAPATH (int)

A directory that holds multiple CA certificates. Use this option alongside CURLOPT_SSL_VERIFYPEER.

CURLOPT_CA_CACHE_TIMEOUT (int)

Available as of PHP 8.3.0 and cURL 7.87.0

CURLOPT_CERTINFO (int)

true to output SSL certification information to STDERR on secure transfers. Added in cURL 7.19.1. Requires CURLOPT_VERBOSE to be on to have an effect.

CURLOPT_CONNECTTIMEOUT (int)

The number of seconds to wait while trying to connect. Use 0 to wait indefinitely.

CURLOPT_CONNECTTIMEOUT_MS (int)

The number of milliseconds to wait while trying to connect. Use 0 to wait indefinitely. If libcurl is built to use the standard system name resolver, that portion of the connect will still use full-second resolution for timeouts with a minimum timeout allowed of one second. Available as of cURL 7.16.2.

CURLOPT_CONNECT_ONLY (int)

true tells the library to perform all the required proxy authentication and connection setup, but no data transfer. This option is implemented for HTTP, SMTP and POP3. Available as of cURL 7.15.2.

CURLOPT_CONNECT_TO (int)

Connect to a specific host and port instead of the URL's host and port. Accepts an array of strings with the format HOST:PORT:CONNECT-TO-HOST:CONNECT-TO-PORT. Available as of PHP 7.0.7 and cURL 7.49.0

The contents of the "Cookie: " header to be used in the HTTP request. Note that multiple cookies are separated with a semicolon followed by a space (e.g., "fruit=apple; colour=red")

CURLOPT_COOKIEFILE (int)

The name of the file containing the cookie data. The cookie file can be in Netscape format, or just plain HTTP-style headers dumped into a file. If the name is an empty string, no cookies are loaded, but cookie handling is still enabled.

CURLOPT_COOKIEJAR (int)

The name of a file to save all internal cookies to when the handle's destructor is called.

警告

As of PHP 8.0.0, curl_close() is a no-op and does not destroy the handle. If cookies need to be written prior to the handle being automatically destroyed, call unset() on the handle.

CURLOPT_COOKIELIST (int)

A cookie string (i.e. a single line in Netscape/Mozilla format, or a regular HTTP-style Set-Cookie header) adds that single cookie to the internal cookie store. "ALL" erases all cookies held in memory. "SESS" erases all session cookies held in memory. "FLUSH" writes all known cookies to the file specified by CURLOPT_COOKIEJAR. "RELOAD" loads all cookies from the files specified by CURLOPT_COOKIEFILE. Available as of cURL 7.14.1

CURLOPT_COOKIESESSION (int)

true to mark this as a new cookie "session". It will force libcurl to ignore all cookies it is about to load that are "session cookies" from the previous session. By default, libcurl always stores and loads all cookies, independent if they are session cookies or not. Session cookies are cookies without expiry date and they are meant to be alive and existing for this "session" only.

CURLOPT_CRLF (int)

true to convert Unix newlines to CRLF newlines on transfers.

CURLOPT_CRLFILE (int)

Pass a string naming a file with the concatenation of CRL (Certificate Revocation List) (in PEM format) to use in the certificate validation that occurs during the SSL exchange. When cURL is built to use GnuTLS, there is no way to influence the use of CRL passed to help in the verification process. When cURL is built with OpenSSL support, X509_V_FLAG_CRL_CHECK and X509_V_FLAG_CRL_CHECK_ALL are both set, requiring CRL check against all the elements of the certificate chain if a CRL file is passed. Also note that CURLOPT_CRLFILE implies CURLSSLOPT_NO_PARTIALCHAIN as of cURL 7.71.0 due to an OpenSSL bug. Available as of cURL 7.19.0

CURLOPT_CUSTOMREQUEST (int)

A custom request method to use instead of "GET" or "HEAD" when doing a HTTP request. This is useful for doing "DELETE" or other, more obscure HTTP requests. Valid values are things like "GET", "POST", "CONNECT" and so on; i.e. Do not enter a whole HTTP request line here. For instance, entering "GET /index.html HTTP/1.0\r\n\r\n" would be incorrect.

注意:

Don't do this without making sure the server supports the custom request method first.

CURLOPT_DEFAULT_PROTOCOL (int)

The default protocol to use if the URL is missing a scheme name. Available as of PHP 7.0.7 and cURL 7.45.0

CURLOPT_DIRLISTONLY (int)

Setting this option to 1 will have different effects based on the protocol it is used with. FTP and SFTP based URLs will list only the names of files in a directory. POP3 will list the email message or messages on the POP3 server. For FILE, this option has no effect as directories are always listed in this mode. Using this option with CURLOPT_WILDCARDMATCH will prevent the latter from having any effect. Defaults to 0. Available as of cURL 7.17.0.

CURLOPT_DISALLOW_USERNAME_IN_URL (int)

true to not allow URLs that include a username. Usernames are allowed by default (0). Available as of PHP 7.3.0 and cURL 7.61.0

CURLOPT_DNS_CACHE_TIMEOUT (int)

The number of seconds to keep DNS entries in memory. This option is set to 120 (2 minutes) by default.

CURLOPT_DNS_INTERFACE (int)

Set the name of the network interface that the DNS resolver should bind to. This must be an interface name (not an address). Available as of PHP 7.0.7 and cURL 7.33.0

CURLOPT_DNS_LOCAL_IP4 (int)

Set the local IPv4 address that the resolver should bind to. The argument should contain a single numerical IPv4 address as a string. Available as of PHP 7.0.7 and cURL 7.33.0

CURLOPT_DNS_LOCAL_IP6 (int)

Set the local IPv6 address that the resolver should bind to. The argument should contain a single numerical IPv6 address as a string. Available as of PHP 7.0.7 and cURL 7.33.0

CURLOPT_DNS_SERVERS (int)

Pass a string with a comma-separated list of DNS servers to be used instead of the system default (e.g.: 192.168.1.100,192.168.1.101:8080). Available as of cURL 7.24.0

CURLOPT_DNS_SHUFFLE_ADDRESSES (int)

true to shuffle the order of all returned addresses so that they will be used in a random order, when a name is resolved and more than one IP address is returned. This may cause IPv4 to be used before IPv6 or vice versa. Available as of PHP 7.3.0 and cURL 7.60.0

CURLOPT_DNS_USE_GLOBAL_CACHE (int)

true to use a global DNS cache. This option is not thread-safe. It is conditionally enabled by default if PHP is built for non-threaded use (CLI, FCGI, Apache2-Prefork, etc.).

CURLOPT_DOH_SSL_VERIFYHOST (int)

Verify the DNS-over-HTTPS server's SSL certificate name fields against the host name. Available as of PHP 8.2.0 and cURL 7.76.0.

CURLOPT_DOH_SSL_VERIFYPEER (int)

Verify the authenticity of the DNS-over-HTTPS server's SSL certificate. Available as of PHP 8.2.0 and cURL 7.76.0.

CURLOPT_DOH_SSL_VERIFYSTATUS (int)

Tell cURL to verify the status of the DNS-over-HTTPS server certificate using the "Certificate Status Request" TLS extension (OCSP stapling). Available as of PHP 8.2.0 and cURL 7.76.0.

CURLOPT_DOH_URL (int)

Provides the DNS-over-HTTPS URL. Available as of PHP 8.1.0 and cURL 7.62.0.

CURLOPT_EGDSOCKET (int)

Like CURLOPT_RANDOM_FILE, except a filename to an Entropy Gathering Daemon socket.

CURLOPT_ENCODING (int)

The contents of the "Accept-Encoding: " header. This enables decoding of the response. Supported encodings are "identity", "deflate", and "gzip". If an empty string, "", is set, a header containing all supported encoding types is sent. Available as of cURL 7.10.

CURLOPT_EXPECT_100_TIMEOUT_MS (int)

The timeout for Expect: 100-continue responses in milliseconds. Defaults to 1000 milliseconds. Available as of PHP 7.0.7 and cURL 7.36.0

CURLOPT_FAILONERROR (int)

true to fail verbosely if the HTTP code returned is greater than or equal to 400. The default behavior is to return the page normally, ignoring the code.

CURLOPT_FILE (int)

The file that the transfer should be written to. The default is STDOUT (the browser window).

CURLOPT_FILETIME (int)

true to attempt to retrieve the modification date of the remote document. This value can be retrieved using the CURLINFO_FILETIME option with curl_getinfo().

CURLOPT_FNMATCH_FUNCTION (int)

Pass a callable that will be used for wildcard matching. The signature of the callback should be:

callback(resource $curlHandle, string $pattern, string $string): int
curlHandle
The cURL handle.
pattern
The wildcard pattern.
string
The string to run the wildcard pattern matching on.
The callback should return CURL_FNMATCHFUNC_MATCH if pattern matches the string, CURL_FNMATCHFUNC_NOMATCH if not or CURL_FNMATCHFUNC_FAIL if an error occurred. Available as of cURL 7.21.0.

CURLOPT_FOLLOWLOCATION (int)

true to follow any "Location: " header that the server sends as part of the HTTP header. See also CURLOPT_MAXREDIRS. This constant is not available when open_basedir is enabled.

CURLOPT_FORBID_REUSE (int)

true to force the connection to explicitly close when it has finished processing, and not be pooled for reuse.

CURLOPT_FRESH_CONNECT (int)

true to force the use of a new connection instead of a cached one.

CURLOPT_FTPAPPEND (int)

true to append to the remote file instead of overwriting it.

CURLOPT_FTPASCII (int)

An alias of CURLOPT_TRANSFERTEXT. Use that instead.

CURLOPT_FTPLISTONLY (int)

true to only list the names of an FTP directory.

CURLOPT_FTPPORT (int)

The value which will be used to get the IP address to use for the FTP "PORT" instruction. The "PORT" instruction tells the remote server to connect to our specified IP address. The string may be a plain IP address, a hostname, a network interface name (under Unix), or just a plain '-' to use the systems default IP address.

CURLOPT_FTPSSLAUTH (int)

The FTP authentication method (when is activated): CURLFTPAUTH_SSL (try SSL first), CURLFTPAUTH_TLS (try TLS first), or CURLFTPAUTH_DEFAULT (let cURL decide). Available as of cURL 7.12.2.

CURLOPT_FTP_ACCOUNT (int)

Pass a string that will be sent as account information over FTP (using the ACCT command) after username and password has been provided to the server. Set to null to disable sending the account information. Defaults to null. Available as of cURL 7.13.0.

CURLOPT_FTP_ALTERNATIVE_TO_USER (int)

Pass a string that will be used to try to authenticate over FTP if the USER/PASS negotiation fails. Available as of cURL 7.15.5.

CURLOPT_FTP_CREATE_MISSING_DIRS (int)

true to create missing directories when an FTP operation encounters a path that currently doesn't exist.

CURLOPT_FTP_FILEMETHOD (int)

Tell curl which method to use to reach a file on a FTP(S) server. Possible values are CURLFTPMETHOD_DEFAULT, CURLFTPMETHOD_MULTICWD, CURLFTPMETHOD_NOCWD, and CURLFTPMETHOD_SINGLECWD. Available as of cURL 7.15.1.

CURLOPT_FTP_RESPONSE_TIMEOUT (int)

A timeout in seconds cURL will wait for a response from an FTP server. This option overrides CURLOPT_TIMEOUT. This option accepts any value that can be cast to a valid int. Available as of cURL 7.10.8 and deprecated as of cURL 7.85.0.

CURLOPT_FTP_SKIP_PASV_IP (int)

If this option is set to 1 cURL will not use the IP address the server suggests in its 227-response to cURL's PASV command but will use the IP address it used for the connection. The port number received from the 227-response will not be ignored by cURL. Defaults to 1 as of cURL 7.74.0 and 0 prior to that. Available as of cURL 7.15.0.

CURLOPT_FTP_SSL (int)

CURLOPT_FTP_SSL_CCC (int)

This option makes cURL use CCC (Clear Command Channel) which shuts down the SSL/TLS layer after authenticating making the rest of the control channel communication unencrypted. Use one of the CURLFTPSSL_CCC_* constants. Defaults to CURLFTPSSL_CCC_NONE. Available as of cURL 7.16.1.

CURLOPT_FTP_USE_EPRT (int)

true to use EPRT (and LPRT) when doing active FTP downloads. Use false to disable EPRT and LPRT and use PORT only.

CURLOPT_FTP_USE_EPSV (int)

true to first try an EPSV command for FTP transfers before reverting back to PASV. Set to false to disable EPSV.

CURLOPT_FTP_USE_PRET (int)

Set to 1 to send a PRET command before PASV (and EPSV). Has no effect when using the active FTP transfers mode. Defaults to 0. Available as of cURL 7.20.0.

CURLOPT_GSSAPI_DELEGATION (int)

Set to CURLGSSAPI_DELEGATION_FLAG to allow unconditional GSSAPI credential delegation. Set to CURLGSSAPI_DELEGATION_POLICY_FLAG to delegate only if the OK-AS-DELEGATE flag is set in the service ticket. Defaults to CURLGSSAPI_DELEGATION_NONE. Available as of cURL 7.22.0.

CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS (int)

Head start for ipv6 for the happy eyeballs algorithm. Happy eyeballs attempts to connect to both IPv4 and IPv6 addresses for dual-stack hosts, preferring IPv6 first for timeout milliseconds. Defaults to CURL_HET_DEFAULT, which is currently 200 milliseconds. Available as of PHP 7.3.0 and cURL 7.59.0

CURLOPT_HAPROXYPROTOCOL (int)

true to send an HAProxy PROXY protocol v1 header at the start of the connection. The default action is not to send this header. Available as of PHP 7.3.0 and cURL 7.60.0

CURLOPT_HEADER (int)

true to include the header in the output.

CURLOPT_HEADERFUNCTION (int)

A callback accepting two parameters. The first is the cURL resource, the second is a string with the header data to be written. The header data must be written by this callback. Return the number of bytes written.

CURLOPT_HEADEROPT (int)

Possible values are CURLHEADER_UNIFIED or CURLHEADER_SEPARATE. Defaults to CURLHEADER_SEPARATE as of cURL 7.42.1, and CURLHEADER_UNIFIED before. Available as of PHP 7.0.7 and cURL 7.37.0

CURLOPT_HSTS (int)

HSTS (HTTP Strict Transport Security) cache file name. Available as of PHP 8.2.0 and cURL 7.74.0

CURLOPT_HSTS_CTRL (int)

Controls HSTS (HTTP Strict Transport Security) behavior. Populate the bitmask with the correct set of features to instruct cURL how to handle HSTS for the transfers using this handle. CURLHSTS_ENABLE enables the in-memory HSTS cache. If the HSTS cache file is defined, set CURLHSTS_READONLYFILE to make the file read-only. Available as of PHP 8.2.0 and cURL 7.74.0

CURLOPT_HTTP09_ALLOWED (int)

Whether to allow HTTP/0.9 responses. Defaults to false as of libcurl 7.66.0; formerly it defaulted to true. Available as of PHP 7.3.15 and 7.4.3, respectively, and cURL 7.64.0

CURLOPT_HTTP200ALIASES (int)

An array of HTTP 200 responses that will be treated as valid responses and not as errors. Available as of cURL 7.10.3.

CURLOPT_HTTPAUTH (int)

The HTTP authentication method(s) to use. The options are: CURLAUTH_BASIC, CURLAUTH_DIGEST, CURLAUTH_GSSNEGOTIATE, CURLAUTH_NTLM, CURLAUTH_AWS_SIGV4, CURLAUTH_ANY, and CURLAUTH_ANYSAFE. The bitwise | (or) operator can be used to combine more than one method. If this is done, cURL will poll the server to see what methods it supports and pick the best one. CURLAUTH_ANY sets all bits. cURL will automatically select the one it finds most secure. CURLAUTH_ANYSAFE sets all bits except CURLAUTH_BASIC. cURL will automatically select the one it finds most secure.

CURLOPT_HTTPGET (int)

true to reset the HTTP request method to GET. Since GET is the default, this is only necessary if the request method has been changed.

CURLOPT_HTTPHEADER (int)

An array of HTTP header fields to set, in the format array('Content-type: text/plain', 'Content-length: 100')

CURLOPT_HTTPPROXYTUNNEL (int)

true to tunnel through a given HTTP proxy.

CURLOPT_HTTP_CONTENT_DECODING (int)

false to get the raw HTTP response body. Available as of cURL 7.16.2.

CURLOPT_HTTP_TRANSFER_DECODING (int)

If set to 0, transfer decoding is disabled. If set to 1, transfer decoding is enabled. cURL does chunked transfer decoding by default unless this option is set to 0. Defaults to 1. Available as of cURL 7.16.2.

CURLOPT_HTTP_VERSION (int)

CURL_HTTP_VERSION_NONE (default, lets CURL decide which version to use), CURL_HTTP_VERSION_1_0 (forces HTTP/1.0), CURL_HTTP_VERSION_1_1 (forces HTTP/1.1), CURL_HTTP_VERSION_2_0 (attempts HTTP 2), CURL_HTTP_VERSION_2 (alias of CURL_HTTP_VERSION_2_0), CURL_HTTP_VERSION_2TLS (attempts HTTP 2 over TLS (HTTPS) only) or CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE (issues non-TLS HTTP requests using HTTP/2 without HTTP/1.1 Upgrade).

CURLOPT_IGNORE_CONTENT_LENGTH (int)

If set to 1, ignore the Content-Length header in the HTTP response and ignore asking for or relying on it for FTP transfers. Defaults to 0. Available as of cURL 7.14.1.

CURLOPT_INFILE (int)

The file that the transfer should be read from when uploading.

CURLOPT_INFILESIZE (int)

The expected size, in bytes, of the file when uploading a file to a remote site. Note that using this option will not stop libcurl from sending more data, as exactly what is sent depends on CURLOPT_READFUNCTION.

CURLOPT_INTERFACE (int)

The name of the outgoing network interface to use. This can be an interface name, an IP address or a host name.

CURLOPT_IPRESOLVE (int)

Allows an application to select what kind of IP addresses to use when resolving host names. This is only interesting when using host names that resolve addresses using more than one version of IP, possible values are CURL_IPRESOLVE_WHATEVER, CURL_IPRESOLVE_V4, CURL_IPRESOLVE_V6, by default CURL_IPRESOLVE_WHATEVER. Available as of cURL 7.10.8.

CURLOPT_ISSUERCERT (int)

If set to a string naming a file holding a CA certificate in PEM format, an additional check against the peer certificate is performed to verify the issuer is indeed the one associated with the certificate provided by the option. For the result of the check to be considered a failure, this option should be used in combination with the CURLOPT_SSL_VERIFYPEER option. Available as of cURL 7.19.0.

CURLOPT_ISSUERCERT_BLOB (int)

Issuer SSL certificate from memory blob. Available as of PHP 8.1.0 and cURL 7.71.0.

CURLOPT_KEEP_SENDING_ON_ERROR (int)

true to keep sending the request body if the HTTP code returned is equal to or larger than 300. The default action would be to stop sending and close the stream or connection. Suitable for manual NTLM authentication. Most applications do not need this option. Available as of PHP 7.3.0 and cURL 7.51.0

CURLOPT_KEYPASSWD (int)

The password required to use the CURLOPT_SSLKEY or CURLOPT_SSH_PRIVATE_KEYFILE private key. Available as of cURL 7.16.1.

CURLOPT_KRB4LEVEL (int)

The KRB4 (Kerberos 4) security level. Any of the following values (in order from least to most powerful) are valid: "clear", "safe", "confidential", "private".. If the string does not match one of these, "private" is used. Setting this option to null will disable KRB4 security. Currently KRB4 security only works with FTP transactions.

CURLOPT_KRBLEVEL (int)

Set the kerberos security level for FTP and also enables kerberos awareness. This should be set to one of the following strings: clear, safe, confidential, private . If the string is set but does not match one of these, private is used. Setting this option to null will disable kerberos support for FTP. Defaults to null. Available as of cURL 7.16.4.

CURLOPT_LOCALPORT (int)

Sets the local port number of the socket used for the connection. This option accepts any value that can be cast to a valid int. Defaults to 0. Available as of cURL 7.15.2.

CURLOPT_LOCALPORTRANGE (int)

The number of attempts cURL makes to find a working local port number, starting with the one set with CURLOPT_LOCALPORT. This option accepts any value that can be cast to a valid int. Defaults to 1. Available as of cURL 7.15.2.

CURLOPT_LOGIN_OPTIONS (int)

Can be used to set protocol specific login options, such as the preferred authentication mechanism via "AUTH=NTLM" or "AUTH=*", and should be used in conjunction with the CURLOPT_USERNAME option. Available as of PHP 7.0.7 and cURL 7.34.0

CURLOPT_LOW_SPEED_LIMIT (int)

The transfer speed, in bytes per second, that the transfer should be below during the count of CURLOPT_LOW_SPEED_TIME seconds before PHP considers the transfer too slow and aborts.

CURLOPT_LOW_SPEED_TIME (int)

The number of seconds the transfer speed should be below CURLOPT_LOW_SPEED_LIMIT before PHP considers the transfer too slow and aborts.

CURLOPT_MAIL_AUTH (int)

Set a string with the authentication address (identity) of a submitted message that is being relayed to another server. The address should not be specified within a pair of angled brackets (><). If an empty string is used then a pair of brackets are sent by cURL as required by RFC 2554. Available as of cURL 7.25.0.

CURLOPT_MAIL_FROM (int)

Set a string with the sender's email address when sending SMTP mail. The email address should be specified with angled brackets (><) around it, which if not specified are added automatically. If this parameter is not specified then an empty address is sent to the SMTP server which might cause the email to be rejected. Available as of cURL 7.20.0.

CURLOPT_MAIL_RCPT (int)

Set to an array of strings with the recipients to pass to the server in an SMTP mail request. Each recipient should be specified within a pair of angled brackets (><). If an angled bracket is not used as the first character, cURL assumes a single email address has been provided and encloses that address within brackets. Available as of cURL 7.20.0.

CURLOPT_MAIL_RCPT_ALLLOWFAILS (int)

Available as of PHP 8.2.0 and cURL 7.69.0

CURLOPT_MAXAGE_CONN (int)

The maximum idle time allowed for an existing connection to be considered for reuse. Default maximum age is set to 118 seconds. Available as of PHP 8.2.0 and cURL 7.65.0

CURLOPT_MAXCONNECTS (int)

The maximum amount of persistent connections that are allowed. When the limit is reached, the oldest one in the cache is closed to prevent increasing the number of open connections.

CURLOPT_MAXFILESIZE (int)

Sets the maximum accepted size (in bytes) of a file to download. If the file requested is found larger than this value, the transfer is aborted and CURLE_FILESIZE_EXCEEDED is returned. Passing 0 disables this option, and passing a negative size returns a CURLE_BAD_FUNCTION_ARGUMENT. If the file size is not known prior to the start of download, this option has no effect. For setting a size limit above 2GB, CURLOPT_MAXFILESIZE_LARGE should be used. As of cURL 8.4.0, this option also stops ongoing transfers if they reach this threshold. This option accepts any value that can be cast to a valid int. Defaults to 0. Available as of cURL 7.10.8.

CURLOPT_MAXFILESIZE_LARGE (int)

The maximum file size in bytes allowed to download. If the file requested is found larger than this value, the transfer will not start and CURLE_FILESIZE_EXCEEDED will be returned. The file size is not always known prior to download, and for such files this option has no effect even if the file transfer ends up being larger than this given limit. Available as of PHP 8.2.0 and cURL 7.11.0

CURLOPT_MAXLIFETIME_CONN (int)

The maximum time in seconds, since the creation of the connection, that is allowed for an existing connection to have for it to be considered for reuse. If a connection is found in the cache that is older than this value, it will instead be closed once any in-progress transfers are complete. Default is 0 seconds, meaning the option is disabled and all connections are eligible for reuse. Available as of PHP 8.2.0 and cURL 7.80.0

CURLOPT_MAXREDIRS (int)

The maximum amount of HTTP redirections to follow. Use this option alongside CURLOPT_FOLLOWLOCATION. Default value of 20 is set to prevent infinite redirects. Setting to -1 allows inifinite redirects, and 0 refuses all redirects.

CURLOPT_MAX_RECV_SPEED_LARGE (int)

If a download exceeds this speed (counted in bytes per second) on cumulative average during the transfer, the transfer will pause to keep the average rate less than or equal to the parameter value. Defaults to unlimited speed. Available as of cURL 7.15.5

CURLOPT_MAX_SEND_SPEED_LARGE (int)

If an upload exceeds this speed (counted in bytes per second) on cumulative average during the transfer, the transfer will pause to keep the average rate less than or equal to the parameter value. Defaults to unlimited speed. Available as of cURL 7.15.5

CURLOPT_MIME_OPTIONS (int)

Available as of PHP 8.3.0 and cURL 7.81.0

CURLOPT_MUTE (int)

true to be completely silent with regards to the cURL functions. Removed as of cURL 7.15.5; use CURLOPT_RETURNTRANSFER instead.

CURLOPT_NETRC (int)

true to scan the ~/.netrc file to find a username and password for the remote site that a connection is being established with.

CURLOPT_NETRC_FILE (int)

Set a string containing the full path name to a .netrc file. If this option is omitted and CURLOPT_NETRC is set, cURL checks for a .netrc file in the current user's home directory. Available as of cURL 7.11.0.

CURLOPT_NEW_DIRECTORY_PERMS (int)

Sets the value of the permissions (int) that is set on newly created directories on the remote server. The default value is 0755. The only protocols that can use this are sftp://, scp:// and file://. Available as of cURL 7.16.4.

CURLOPT_NEW_FILE_PERMS (int)

Sets the value of the permissions (as an int) that are set on newly created files on the remote server. The default value is 0644. The only protocols that can use this are sftp://, scp:// and file://. Available as of cURL 7.16.4.

CURLOPT_NOBODY (int)

true to exclude the body from the output. Request method is then set to HEAD. Changing this to false does not change it to GET.

CURLOPT_NOPROGRESS (int)

true to disable the progress meter for cURL transfers.

注意:

PHP automatically sets this option to true, this should only be changed for debugging purposes.

CURLOPT_NOPROXY (int)

Set a string consisting of a comma separated list of hostnames that do not require a proxy to get reached. Each name in this list is matched as either a domain which contains the hostname or the hostname itself. The only wildcard available in the string is a single * character which matches all hosts, effectively disabling the proxy. Setting this option to an empty string enables the proxy for all hostnames. Since cURL 7.86.0, IP addresses set with this option can be provided using CIDR notation. Available as of cURL 7.19.4.

CURLOPT_NOSIGNAL (int)

true to ignore any cURL function that causes a signal to be sent to the PHP process. This is turned on by default in multi-threaded SAPIs so timeout options can still be used. Available as of cURL 7.10.

CURLOPT_PASSWDFUNCTION (int)

A callback accepting three parameters. The first is the cURL resource, the second is a string containing a password prompt, and the third is the maximum password length. Return the string containing the password. Removed as of PHP 7.3.0.

CURLOPT_PASSWORD (int)

The password to use in authentication. Available as of cURL 7.19.1.

CURLOPT_PATH_AS_IS (int)

true to not handle dot dot sequences. Available as of PHP 7.0.7 and cURL 7.42.0

CURLOPT_PINNEDPUBLICKEY (int)

Set the pinned public key. The string can be the file name of your pinned public key. The file format expected is "PEM" or "DER". The string can also be any number of base64 encoded sha256 hashes preceded by "sha256//" and separated by ";". Available as of PHP 7.0.7 and cURL 7.39.0

CURLOPT_PIPEWAIT (int)

true to wait for pipelining/multiplexing. Available as of PHP 7.0.7 and cURL 7.43.0

CURLOPT_PORT (int)

An alternative port number to connect to.

CURLOPT_POST (int)

true to do a regular HTTP POST. This POST is the normal application/x-www-form-urlencoded kind, most commonly used by HTML forms.

CURLOPT_POSTFIELDS (int)

The full data to post in a HTTP "POST" operation. This parameter can either be passed as a urlencoded string like 'para1=val1&para2=val2&...' or as an array with the field name as key and field data as value. If value is an array, the Content-Type header will be set to multipart/form-data. Files can be sent using CURLFile or CURLStringFile, in which case value must be an array.

CURLOPT_POSTQUOTE (int)

An array of FTP commands to execute on the server after the FTP request has been performed.

CURLOPT_POSTREDIR (int)

A bitmask of 1 (301 Moved Permanently), 2 (302 Found) and 4 (303 See Other) if the HTTP POST method should be maintained when CURLOPT_FOLLOWLOCATION is set and a specific type of redirect occurs. Available as of cURL 7.19.1.

CURLOPT_PRE_PROXY (int)

Set a string holding the host name or dotted numerical IP address to be used as the preproxy that curl connects to before it connects to the HTTP(S) proxy specified in the CURLOPT_PROXY option for the upcoming request. The preproxy can only be a SOCKS proxy and it should be prefixed with [scheme]:// to specify which kind of socks is used. A numerical IPv6 address must be written within [brackets]. Setting the preproxy to an empty string explicitly disables the use of a preproxy. To specify port number in this string, append :[port] to the end of the host name. The proxy's port number may optionally be specified with the separate option CURLOPT_PROXYPORT. Defaults to using port 1080 for proxies if a port is not specified. Available as of PHP 7.3.0 and cURL 7.52.0

CURLOPT_PREQUOTE (int)

Set an array of FTP command strings to pass to the server after the transfer type is set. These commands are not performed when a directory listing is performed, only for file transfers. Available as of cURL 7.9.5.

CURLOPT_PRIVATE (int)

Any data that should be associated with this cURL handle. This data can subsequently be retrieved with the CURLINFO_PRIVATE option of curl_getinfo(). cURL does nothing with this data. When using a cURL multi handle, this private data is typically a unique key to identify a standard cURL handle. Available as of cURL 7.10.3.

CURLOPT_PROGRESSFUNCTION (int)

A callback accepting five parameters. The first is the cURL resource, the second is the total number of bytes expected to be downloaded in this transfer, the third is the number of bytes downloaded so far, the fourth is the total number of bytes expected to be uploaded in this transfer, and the fifth is the number of bytes uploaded so far.

注意:

The callback is only called when the CURLOPT_NOPROGRESS option is set to false.

Return a non-zero value to abort the transfer. In which case, the transfer will set a CURLE_ABORTED_BY_CALLBACK error.

CURLOPT_PROTOCOLS (int)

Bitmask of CURLPROTO_* values. If used, this bitmask limits what protocols libcurl may use in the transfer. This allows you to have a libcurl built to support a wide range of protocols but still limit specific transfers to only be allowed to use a subset of them. By default libcurl will accept all protocols it supports. See also CURLOPT_REDIR_PROTOCOLS. Valid protocol options are: CURLPROTO_HTTP, CURLPROTO_HTTPS, CURLPROTO_FTP, CURLPROTO_FTPS, CURLPROTO_SCP, CURLPROTO_SFTP, CURLPROTO_TELNET, CURLPROTO_LDAP, CURLPROTO_LDAPS, CURLPROTO_DICT, CURLPROTO_FILE, CURLPROTO_TFTP, CURLPROTO_MQTT, CURLPROTO_ALL Available as of cURL 7.19.4.

CURLOPT_PROTOCOLS_STR (int)

Available as of PHP 8.3.0 and cURL 7.85.0

CURLOPT_PROXY (int)

The HTTP proxy to tunnel requests through.

CURLOPT_PROXYAUTH (int)

The HTTP authentication method(s) to use for the proxy connection. Use the same bitmasks as described in CURLOPT_HTTPAUTH. For proxy authentication, only CURLAUTH_BASIC and CURLAUTH_NTLM are currently supported. Available as of cURL 7.10.7.

CURLOPT_PROXYHEADER (int)

An array of custom HTTP headers to pass to proxies. Available as of PHP 7.0.7 and cURL 7.37.0

CURLOPT_PROXYPASSWORD (int)

Set a string with the password to be used for authentication with the proxy. Available as of cURL 7.19.1.

CURLOPT_PROXYPORT (int)

The port number of the proxy to connect to. This port number can also be set in CURLOPT_PROXY.

CURLOPT_PROXYTYPE (int)

Either CURLPROXY_HTTP (default), CURLPROXY_SOCKS4, CURLPROXY_SOCKS5, CURLPROXY_SOCKS4A or CURLPROXY_SOCKS5_HOSTNAME. Available as of cURL 7.10.

CURLOPT_PROXYUSERNAME (int)

Set a string with the username to be used for authentication with the proxy. Available as of cURL 7.19.1.

CURLOPT_PROXYUSERPWD (int)

A username and password formatted as "[username]:[password]" to use for the connection to the proxy.

CURLOPT_PROXY_CAINFO (int)

The path to proxy Certificate Authority (CA) bundle. Set the path as a string naming a file holding one or more certificates to verify the HTTPS proxy with. This option is for connecting to an HTTPS proxy, not an HTTPS server. Defaults set to the system path where libcurl's cacert bundle is assumed to be stored. Available as of PHP 7.3.0 and cURL 7.52.0

CURLOPT_PROXY_CAINFO_BLOB (int)

The name of a PEM file holding one or more certificates to verify the HTTPS proxy with. This option is for connecting to an HTTPS proxy, not an HTTPS server. Defaults set to the system path where libcurl's cacert bundle is assumed to be stored. Available as of PHP 8.2.0 and cURL 7.77.0

CURLOPT_PROXY_CAPATH (int)

The directory holding multiple CA certificates to verify the HTTPS proxy with. Available as of PHP 7.3.0 and cURL 7.52.0

CURLOPT_PROXY_CRLFILE (int)

Set the file name with the concatenation of CRL (Certificate Revocation List) in PEM format to use in the certificate validation that occurs during the SSL exchange. Available as of PHP 7.3.0 and cURL 7.52.0

CURLOPT_PROXY_ISSUERCERT (int)

Proxy issuer SSL certificate filename. Available as of PHP 8.1.0 and cURL 7.71.0.

CURLOPT_PROXY_ISSUERCERT_BLOB (int)

Proxy issuer SSL certificate from memory blob. Available as of PHP 8.1.0 and cURL 7.71.0.

CURLOPT_PROXY_KEYPASSWD (int)

Set the string be used as the password required to use the CURLOPT_PROXY_SSLKEY private key. You never needed a passphrase to load a certificate but you need one to load your private key. This option is for connecting to an HTTPS proxy, not an HTTPS server. Available as of PHP 7.3.0 and cURL 7.52.0

CURLOPT_PROXY_PINNEDPUBLICKEY (int)

Set the pinned public key for HTTPS proxy. The string can be the file name of your pinned public key. The file format expected is "PEM" or "DER". The string can also be any number of base64 encoded sha256 hashes preceded by "sha256//" and separated by ";". Available as of PHP 7.3.0 and cURL 7.52.0

CURLOPT_PROXY_SERVICE_NAME (int)

The proxy authentication service name. Available as of PHP 7.0.7, cURL 7.43.0 (for HTTP proxies) and cURL 7.49.0 (for SOCKS5 proxies).

CURLOPT_PROXY_SSLCERT (int)

The file name of your client certificate used to connect to the HTTPS proxy. The default format is "P12" on Secure Transport and "PEM" on other engines, and can be changed with CURLOPT_PROXY_SSLCERTTYPE. With NSS or Secure Transport, this can also be the nickname of the certificate you wish to authenticate with as it is named in the security database. If you want to use a file from the current directory, please precede it with "./" prefix, in order to avoid confusion with a nickname. Available as of PHP 7.3.0 and cURL 7.52.0

CURLOPT_PROXY_SSLCERTTYPE (int)

The format of your client certificate used when connecting to an HTTPS proxy. Supported formats are "PEM" and "DER", except with Secure Transport. OpenSSL (versions 0.9.3 and later) and Secure Transport (on iOS 5 or later, or OS X 10.7 or later) also support "P12" for PKCS#12-encoded files. Defaults to "PEM". Available as of PHP 7.3.0 and cURL 7.52.0

CURLOPT_PROXY_SSLCERT_BLOB (int)

SSL proxy client certificate from memory blob. Available as of PHP 8.1.0 and cURL 7.71.0.

CURLOPT_PROXY_SSLKEY (int)

The file name of your private key used for connecting to the HTTPS proxy. The default format is "PEM" and can be changed with CURLOPT_PROXY_SSLKEYTYPE. (iOS and Mac OS X only) This option is ignored if curl was built against Secure Transport. Available if built TLS enabled. Available as of PHP 7.3.0 and cURL 7.52.0

CURLOPT_PROXY_SSLKEYTYPE (int)

The format of your private key. Supported formats are "PEM", "DER" and "ENG". Available as of PHP 7.3.0 and cURL 7.52.0

CURLOPT_PROXY_SSLKEY_BLOB (int)

Private key for proxy cert from memory blob. Available as of PHP 8.1.0 and cURL 7.71.0.

CURLOPT_PROXY_SSLVERSION (int)

One of CURL_SSLVERSION_DEFAULT, CURL_SSLVERSION_TLSv1, CURL_SSLVERSION_TLSv1_0, CURL_SSLVERSION_TLSv1_1, CURL_SSLVERSION_TLSv1_2, CURL_SSLVERSION_TLSv1_3, CURL_SSLVERSION_MAX_DEFAULT, CURL_SSLVERSION_MAX_TLSv1_0, CURL_SSLVERSION_MAX_TLSv1_1, CURL_SSLVERSION_MAX_TLSv1_2, CURL_SSLVERSION_MAX_TLSv1_3, CURL_SSLVERSION_SSLv3 .

警告

It is better to not set this option and leave the default CURL_SSLVERSION_DEFAULT which will attempt to figure out the remote SSL protocol version.

Available as of PHP 7.3.0 and cURL 7.52.0

CURLOPT_PROXY_SSL_CIPHER_LIST (int)

The list of ciphers to use for the connection to the HTTPS proxy. The list must be syntactically correct, it consists of one or more cipher strings separated by colons. Commas or spaces are also acceptable separators but colons are normally used, !, - and + can be used as operators. Available as of PHP 7.3.0 and cURL 7.52.0

CURLOPT_PROXY_SSL_OPTIONS (int)

Set proxy SSL behavior options, which is a bitmask of the following constants: CURLSSLOPT_ALLOW_BEAST, CURLSSLOPT_NO_REVOKE, CURLSSLOPT_NO_PARTIALCHAIN Available as of PHP 7.3.0 and cURL 7.52.0

CURLOPT_PROXY_SSL_VERIFYHOST (int)

Set to 2 to verify in the HTTPS proxy's certificate name fields against the proxy name. When set to 0 the connection succeeds regardless of the names used in the certificate. Use that ability with caution! 1 treated as a debug option in curl 7.28.0 and earlier. From curl 7.28.1 to 7.65.3 CURLE_BAD_FUNCTION_ARGUMENT is returned. From curl 7.66.0 onwards 1 and 2 is treated as the same value. In production environments the value of this option should be kept at 2 (default value). Available as of PHP 7.3.0 and cURL 7.52.0

CURLOPT_PROXY_SSL_VERIFYPEER (int)

false to stop cURL from verifying the peer's certificate. Alternate certificates to verify against can be specified with the CURLOPT_CAINFO option or a certificate directory can be specified with the CURLOPT_CAPATH option. When set to false, the peer certificate verification succeeds regardless. true by default. Available as of PHP 7.3.0 and cURL 7.52.0

CURLOPT_PROXY_TLS13_CIPHERS (int)

The list of cipher suites to use for the TLS 1.3 connection to a proxy. The list must be syntactically correct, it consists of one or more cipher suite strings separated by colons. This option is currently used only when curl is built to use OpenSSL 1.1.1 or later. If you are using a different SSL backend you can try setting TLS 1.3 cipher suites by using the CURLOPT_PROXY_SSL_CIPHER_LIST option. Available when built with OpenSSL >= 1.1.1. Available as of PHP 7.3.0 and cURL 7.61.0

CURLOPT_PROXY_TLSAUTH_PASSWORD (int)

The password to use for the TLS authentication method specified with the CURLOPT_PROXY_TLSAUTH_TYPE option. Requires that the CURLOPT_PROXY_TLSAUTH_USERNAME option to also be set. Available as of PHP 7.3.0 and cURL 7.52.0

CURLOPT_PROXY_TLSAUTH_TYPE (int)

The method of the TLS authentication used for the HTTPS connection. Supported method is "SRP".

注意:

Secure Remote Password (SRP) authentication for TLS provides mutual authentication if both sides have a shared secret. To use TLS-SRP, you must also set the CURLOPT_PROXY_TLSAUTH_USERNAME and CURLOPT_PROXY_TLSAUTH_PASSWORD options.

Available as of PHP 7.3.0 and cURL 7.52.0

CURLOPT_PROXY_TLSAUTH_USERNAME (int)

The username to use for the HTTPS proxy TLS authentication method specified with the CURLOPT_PROXY_TLSAUTH_TYPE option. Requires that the CURLOPT_PROXY_TLSAUTH_PASSWORD option to also be set. Available as of PHP 7.3.0 and cURL 7.52.0

CURLOPT_PROXY_TRANSFER_MODE (int)

Set to 1 to set the transfer mode (binary or ASCII) for FTP transfers done via an HTTP proxy, by appending type=a or type=i to the URL. Without this setting or it being set to 0, CURLOPT_TRANSFERTEXT has no effect when doing FTP via a proxy. Defaults to 0. Available as of cURL 7.18.0.

CURLOPT_PUT (int)

true to HTTP PUT a file. The file to PUT must be set with CURLOPT_INFILE and CURLOPT_INFILESIZE.

CURLOPT_QUICK_EXIT (int)

Available as of PHP 8.3.0 and cURL 7.87.0

CURLOPT_QUOTE (int)

An array of FTP commands to execute on the server prior to the FTP request.

CURLOPT_RANDOM_FILE (int)

A filename to be used to seed the random number generator for SSL.

CURLOPT_RANGE (int)

Range(s) of data to retrieve in the format "X-Y" where X or Y are optional. HTTP transfers also support several intervals, separated with commas in the format "X-Y,N-M".

CURLOPT_READDATA (int)

Sets a file pointer resource that will be used by the file read function set with CURLOPT_READFUNCTION. Available as of cURL 7.9.7.

CURLOPT_READFUNCTION (int)

A callback accepting three parameters. The first is the cURL resource, the second is a stream resource provided to cURL through the option CURLOPT_INFILE, and the third is the maximum amount of data to be read. The callback must return a string with a length equal or smaller than the amount of data requested, typically by reading it from the passed stream resource. It should return an empty string to signal EOF.

CURLOPT_REDIR_PROTOCOLS (int)

Bitmask of CURLPROTO_* values. If used, this bitmask limits what protocols libcurl may use in a transfer that it follows to in a redirect when CURLOPT_FOLLOWLOCATION is enabled. This allows you to limit specific transfers to only be allowed to use a subset of protocols in redirections. By default libcurl will allow all protocols except for FILE and SCP. This is a difference compared to pre-7.19.4 versions which unconditionally would follow to all protocols supported. See also CURLOPT_PROTOCOLS for protocol constant values. Available as of cURL 7.19.4.

CURLOPT_REDIR_PROTOCOLS_STR (int)

Available as of PHP 8.3.0 and cURL 7.85.0.

CURLOPT_REFERER (int)

The contents of the "Referer: " header to be used in a HTTP request.

CURLOPT_REQUEST_TARGET (int)

Available as of PHP 7.3.0 and cURL 7.55.0.

CURLOPT_RESOLVE (int)

Provide a custom address for a specific host and port pair. An array of hostname, port, and IP address strings, each element separated by a colon. In the format: array("example.com:80:127.0.0.1") Available as of cURL 7.21.3.

CURLOPT_RESUME_FROM (int)

The offset, in bytes, to resume a transfer from.

CURLOPT_RETURNTRANSFER (int)

true to return the transfer as a string of the return value of curl_exec() instead of outputting it directly.

CURLOPT_RTSP_CLIENT_CSEQ (int)

Set an int with the CSEQ number to issue for the next RTSP request. Useful if the application is resuming a previously broken connection. The CSEQ increments from this new number henceforth. Defaults to 0. Available as of cURL 7.20.0.

CURLOPT_RTSP_REQUEST (int)

Sets the kind of RTSP request to make. Must be one of the CURL_RTSPREQ_* constants. Available as of cURL 7.20.0.

CURLOPT_RTSP_SERVER_CSEQ (int)

Set an int with the CSEQ number to expect for the next RTSP Server to Client request. This feature (listening for Server requests) is unimplemented. Defaults to 0. Available as of cURL 7.20.0.

CURLOPT_RTSP_SESSION_ID (int)

Set a string with the value of the current RTSP Session ID for the handle. Once this value is set to any non-null value, cURL returns CURLE_RTSP_SESSION_ERROR if the ID received from the server does not match. If set to null, cURL automatically sets the ID the first time the server sets it in a response. Defaults to null Available as of cURL 7.20.0.

CURLOPT_RTSP_STREAM_URI (int)

Sets a string with the stream URI to operate on. If not set, cURL defaults to operating on generic server options by passing * in the place of the RTSP Stream URI. When working with RTSP, CURLOPT_RTSP_STREAM_URI indicates what URL to send to the server in the request header while the CURLOPT_URL indicates where to make the connection to. Available as of cURL 7.20.0.

CURLOPT_RTSP_TRANSPORT (int)

Set the Transport: header for this RTSP session. Available as of cURL 7.20.0.

CURLOPT_SAFE_UPLOAD (int)

Always true, what disables support for the @ prefix for uploading files in CURLOPT_POSTFIELDS, which means that values starting with @ can be safely passed as fields. CURLFile may be used for uploads instead.

CURLOPT_SASL_AUTHZID (int)

The authorization identity (authzid) for the transfer. Only applicable to the PLAIN SASL authentication mechanism where it is optional. When not specified, only the authentication identity (authcid) as specified by the username will be sent to the server, along with the password. The server will derive the authzid from the authcid when not provided, which it will then use internally. Available as of PHP 8.2.0 and cURL 7.66.0

CURLOPT_SASL_IR (int)

true to enable sending the initial response in the first packet. Available as of PHP 7.0.7 and cURL 7.31.0

CURLOPT_SERVICE_NAME (int)

The authentication service name. Available as of PHP 7.0.7 and cURL 7.43.0

CURLOPT_SHARE (int)

A result of curl_share_init(). Makes the cURL handle to use the data from the shared handle.

CURLOPT_SOCKS5_AUTH (int)

The SOCKS5 authentication method(s) to use. The options are: CURLAUTH_BASIC, CURLAUTH_GSSAPI, CURLAUTH_NONE. The bitwise | (or) operator can be used to combine more than one method. If this is done, cURL will poll the server to see what methods it supports and pick the best one. CURLAUTH_BASIC allows username/password authentication. CURLAUTH_GSSAPI allows GSS-API authentication. CURLAUTH_NONE allows no authentication. Defaults to CURLAUTH_BASIC|CURLAUTH_GSSAPI. Set the actual username and password with the CURLOPT_PROXYUSERPWD option. Available as of PHP 7.3.0 and cURL 7.55.0

CURLOPT_SOCKS5_GSSAPI_NEC (int)

Set to 1 to enable and 0 to disable the unprotected exchange of the protection mode negotiation as part of the GSSAPI negotiation. Available as of cURL 7.19.4.

CURLOPT_SOCKS5_GSSAPI_SERVICE (int)

Set a string holding the name of the SOCKS5 service. Defaults to rcmd. Available as of cURL 7.19.4 and deprecated as of cURL 7.49.0. Use CURLOPT_PROXY_SERVICE_NAME instead.

CURLOPT_SSH_AUTH_TYPES (int)

A bitmask consisting of one or more of CURLSSH_AUTH_PUBLICKEY, CURLSSH_AUTH_PASSWORD, CURLSSH_AUTH_HOST, CURLSSH_AUTH_KEYBOARD. Set to CURLSSH_AUTH_ANY to let libcurl pick one. Available as of cURL 7.16.1.

CURLOPT_SSH_COMPRESSION (int)

true to enable built-in SSH compression. This is a request, not an order; the server may or may not do it. Available as of PHP 7.3.0 and cURL 7.56.0

CURLOPT_SSH_HOSTKEYFUNCTION (int)

Available as of PHP 8.3.0 and cURL 7.84.0

CURLOPT_SSH_HOST_PUBLIC_KEY_MD5 (int)

A string containing 32 hexadecimal digits. The string should be the MD5 checksum of the remote host's public key, and libcurl will reject the connection to the host unless the md5sums match. This option is only for SCP and SFTP transfers. Available as of cURL 7.17.1.

CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256 (int)

Base64-encoded SHA256 hash of the remote host's public key. The transfer will fail if the given hash does not match the hash the remote host provides. Available as of PHP 8.2.0 and cURL 7.80.0

CURLOPT_SSH_KNOWNHOSTS (int)

Set to the filename of the known_host file to use which should use the OpenSSH file format as supported by libssh2. Available as of cURL 7.19.6.

CURLOPT_SSH_PRIVATE_KEYFILE (int)

The file name for your private key. If not used, libcurl defaults to $HOME/.ssh/id_dsa if the HOME environment variable is set, and just "id_dsa" in the current directory if HOME is not set. If the file is password-protected, set the password with CURLOPT_KEYPASSWD. Available as of cURL 7.16.1.

CURLOPT_SSH_PUBLIC_KEYFILE (int)

The file name for your public key. If not used, libcurl defaults to $HOME/.ssh/id_dsa.pub if the HOME environment variable is set, and just "id_dsa.pub" in the current directory if HOME is not set. Available as of cURL 7.16.1.

CURLOPT_SSLCERT (int)

The name of a file containing a PEM formatted certificate.

CURLOPT_SSLCERTPASSWD (int)

The password required to use the CURLOPT_SSLCERT certificate.

CURLOPT_SSLCERTTYPE (int)

The format of the certificate. Supported formats are "PEM" (default), "DER", and "ENG". As of OpenSSL 0.9.3, "P12" (for PKCS#12-encoded files) is also supported. Available as of cURL 7.9.3.

CURLOPT_SSLCERT_BLOB (int)

SSL client certificate from memory blob. Available as of PHP 8.1.0 and cURL 7.71.0.

CURLOPT_SSLENGINE (int)

The identifier for the crypto engine of the private SSL key specified in CURLOPT_SSLKEY.

CURLOPT_SSLENGINE_DEFAULT (int)

The identifier for the crypto engine used for asymmetric crypto operations.

CURLOPT_SSLKEY (int)

The name of a file containing a private SSL key.

CURLOPT_SSLKEYPASSWD (int)

The secret password needed to use the private SSL key specified in CURLOPT_SSLKEY.

注意:

Since this option contains a sensitive password, remember to keep the PHP script it is contained within safe.

CURLOPT_SSLKEYTYPE (int)

The key type of the private SSL key specified in CURLOPT_SSLKEY. Supported key types are "PEM" (default), "DER", and "ENG".

CURLOPT_SSLKEY_BLOB (int)

Private key for client cert from memory blob. Available as of PHP 8.1.0 and cURL 7.71.0.

CURLOPT_SSLVERSION (int)

One of CURL_SSLVERSION_DEFAULT, CURL_SSLVERSION_TLSv1, CURL_SSLVERSION_SSLv2, CURL_SSLVERSION_SSLv3, CURL_SSLVERSION_TLSv1_0, CURL_SSLVERSION_TLSv1_1, CURL_SSLVERSION_TLSv1_2, CURL_SSLVERSION_TLSv1_3 . The maximum TLS version can be set by using one of the CURL_SSLVERSION_MAX_* constants. It is also possible to bitwise OR one of the CURL_SSLVERSION_* constants with one of the CURL_SSLVERSION_MAX_*. CURL_SSLVERSION_MAX_DEFAULT (the maximum version supported by the library), CURL_SSLVERSION_MAX_TLSv1_0, CURL_SSLVERSION_MAX_TLSv1_1, CURL_SSLVERSION_MAX_TLSv1_2, CURL_SSLVERSION_MAX_TLSv1_3 .

警告

It is better to not set this option and leave the defaults. As setting this to CURL_SSLVERSION_SSLv2 or CURL_SSLVERSION_SSLv3 is very dangerous, given the known vulnerabilities in SSLv2 and SSLv3.

CURLOPT_SSL_CIPHER_LIST (int)

A list of ciphers to use for SSL. For example, RC4-SHA and TLSv1 are valid cipher lists.

CURLOPT_SSL_EC_CURVES (int)

A colon delimited list of elliptic curve algorithms. For example, X25519:P-521 is a valid list of two elliptic curves. This option defines the client's key exchange algorithms in the SSL handshake, if the SSL backend cURL is built to use supports it. Available as of PHP 8.2.0 and cURL 7.73.0

CURLOPT_SSL_ENABLE_ALPN (int)

false to disable ALPN in the SSL handshake (if the SSL backend libcurl is built to use supports it), which can be used to negotiate http2. Available as of PHP 7.0.7 and cURL 7.36.0

CURLOPT_SSL_ENABLE_NPN (int)

false to disable NPN in the SSL handshake (if the SSL backend libcurl is built to use supports it), which can be used to negotiate http2. Available as of PHP 7.0.7 and cURL 7.36.0

CURLOPT_SSL_FALSESTART (int)

true to enable TLS false start. Available as of PHP 7.0.7 and cURL 7.42.0

CURLOPT_SSL_OPTIONS (int)

Set SSL behavior options, which is a bitmask of the following constants: CURLSSLOPT_ALLOW_BEAST, CURLSSLOPT_NO_REVOKE, CURLSSLOPT_AUTO_CLIENT_CERT, CURLSSLOPT_NATIVE_CA, CURLSSLOPT_NO_PARTIALCHAIN, CURLSSLOPT_REVOKE_BEST_EFFORT Available as of PHP 7.0.7. and cURL 7.25.0

CURLOPT_SSL_SESSIONID_CACHE (int)

Set to 0 to disable and 1 to enable SSL session-ID caching. By default all transfers are done using the cache enabled. Available as of cURL 7.16.0.

CURLOPT_SSL_VERIFYHOST (int)

2 to verify that a Common Name field or a Subject Alternate Name field in the SSL peer certificate matches the provided hostname. 0 to not check the names. 1 should not be used. In production environments the value of this option should be kept at 2 (default value). Support for value 1 removed in cURL 7.28.1.

CURLOPT_SSL_VERIFYPEER (int)

false to stop cURL from verifying the peer's certificate. Alternate certificates to verify against can be specified with the CURLOPT_CAINFO option or a certificate directory can be specified with the CURLOPT_CAPATH option. true by default as of cURL 7.10. Default bundle installed as of cURL 7.10.

CURLOPT_SSL_VERIFYSTATUS (int)

true to verify the certificate's status. Available as of PHP 7.0.7 and cURL 7.41.0

CURLOPT_STDERR (int)

An alternative location to output errors to instead of STDERR.

CURLOPT_STREAM_WEIGHT (int)

Set the numerical stream weight (a number between 1 and 256). Available as of PHP 7.0.7 and cURL 7.46.0

CURLOPT_SUPPRESS_CONNECT_HEADERS (int)

true to suppress proxy CONNECT response headers from the user callback functions CURLOPT_HEADERFUNCTION and CURLOPT_WRITEFUNCTION, when CURLOPT_HTTPPROXYTUNNEL is used and a CONNECT request is made. Available as of PHP 7.3.0 and cURL 7.54.0

CURLOPT_TCP_FASTOPEN (int)

true to enable TCP Fast Open. Available as of PHP 7.0.7 and cURL 7.49.0

CURLOPT_TCP_KEEPALIVE (int)

If set to 1, TCP keepalive probes will be sent. The delay and frequency of these probes can be controlled by the CURLOPT_TCP_KEEPIDLE and CURLOPT_TCP_KEEPINTVL options, provided the operating system supports them. If set to 0 (default) keepalive probes are disabled. Available as of cURL 7.25.0

CURLOPT_TCP_KEEPIDLE (int)

Sets the delay, in seconds, that the operating system will wait while the connection is idle before sending keepalive probes, if CURLOPT_TCP_KEEPALIVE is enabled. Not all operating systems support this option. The default is 60. Available as of cURL 7.25.0

CURLOPT_TCP_KEEPINTVL (int)

Sets the interval, in seconds, that the operating system will wait between sending keepalive probes, if CURLOPT_TCP_KEEPALIVE is enabled. Not all operating systems support this option. The default is 60. Available as of cURL 7.25.0

CURLOPT_TCP_NODELAY (int)

true to disable TCP's Nagle algorithm, which tries to minimize the number of small packets on the network. Available as of cURL 7.11.2.

CURLOPT_TELNETOPTIONS (int)

Set an array of strings to pass to the telnet negotiations. The variables should be in the format >option=value<. cURL supports the options TTYPE, XDISPLOC and NEW_ENV. Available as of cURL 7.7.

CURLOPT_TFTP_BLKSIZE (int)

Set the blocksize to use for TFTP data transmission. Valid range is 8-65464 bytes. The default of 512 bytes is used if this option is not specified. The specified block size is only used if supported by the remote server. If the server does not return an option acknowledgment or returns an option acknowledgment with no block size, the default of 512 bytes is used. Available as of cURL 7.19.4.

CURLOPT_TFTP_NO_OPTIONS (int)

true to not send TFTP options requests. Available as of PHP 7.0.7 and cURL 7.48.0

CURLOPT_TIMECONDITION (int)

How CURLOPT_TIMEVALUE is treated. Use CURL_TIMECOND_IFMODSINCE to return the page only if it has been modified since the time specified in CURLOPT_TIMEVALUE. If it hasn't been modified, a "304 Not Modified" header will be returned assuming CURLOPT_HEADER is true. Use CURL_TIMECOND_IFUNMODSINCE for the reverse effect. Use CURL_TIMECOND_NONE to ignore CURLOPT_TIMEVALUE and always return the page. CURL_TIMECOND_NONE is the default. Before cURL 7.46.0 the default was CURL_TIMECOND_IFMODSINCE.

CURLOPT_TIMEOUT (int)

The maximum number of seconds to allow cURL functions to execute.

CURLOPT_TIMEOUT_MS (int)

The maximum number of milliseconds to allow cURL functions to execute. If libcurl is built to use the standard system name resolver, that portion of the connect will still use full-second resolution for timeouts with a minimum timeout allowed of one second. Available as of cURL 7.16.2.

CURLOPT_TIMEVALUE (int)

The time in seconds since January 1st, 1970. The time will be used by CURLOPT_TIMECONDITION.

CURLOPT_TIMEVALUE_LARGE (int)

The time in seconds since January 1st, 1970. The time will be used by CURLOPT_TIMECONDITION. Defaults to zero. The difference between this option and CURLOPT_TIMEVALUE is the type of the argument. On systems where 'long' is only 32 bit wide, this option has to be used to set dates beyond the year 2038. Available as of PHP 7.3.0 and cURL 7.59.0

CURLOPT_TLS13_CIPHERS (int)

The list of cipher suites to use for the TLS 1.3 connection. The list must be syntactically correct, it consists of one or more cipher suite strings separated by colons. This option is currently used only when curl is built to use OpenSSL 1.1.1 or later. If you are using a different SSL backend you can try setting TLS 1.3 cipher suites by using the CURLOPT_SSL_CIPHER_LIST option. Available when built with OpenSSL >= 1.1.1. Available as of PHP 7.3.0 and cURL 7.61.0

CURLOPT_TLSAUTH_PASSWORD (int)

Set a password to use for the TLS authentication method specified with the CURLOPT_TLSAUTH_TYPE option. Requires that the CURLOPT_TLSAUTH_USERNAME option also be set. This feature relies on TLS SRP which does not work with TLS 1.3. Available as of cURL 7.21.4.

CURLOPT_TLSAUTH_TYPE (int)

Set a string with the method of the TLS authentication. Supported method is SRP (TLS Secure Remote Password authentication). Available as of cURL 7.21.4.

CURLOPT_TLSAUTH_USERNAME (int)

Set a string with the username to use for the TLS authentication method specified with the CURLOPT_TLSAUTH_TYPE option. Requires that the CURLOPT_TLSAUTH_PASSWORD option also be set. This feature relies on TLS SRP which does not work with TLS 1.3. Available as of cURL 7.21.4.

CURLOPT_TRANSFER_ENCODING (int)

Set to 1 to enable and 0 to disable requesting compressed Transfer Encoding in the outgoing HTTP request. If the server responds with a compressed Transfer Encoding, cURL will automatically uncompress it on reception. Defaults to 0. Available as of cURL 7.21.6.

CURLOPT_TRANSFERTEXT (int)

true to use ASCII mode for FTP transfers. For LDAP, it retrieves data in plain text instead of HTML. On Windows systems, it will not set STDOUT to binary mode.

CURLOPT_UNIX_SOCKET_PATH (int)

Enables the use of Unix domain sockets as connection endpoint and sets the path to the given string. Available as of PHP 7.0.7 and cURL 7.40.0

CURLOPT_UNRESTRICTED_AUTH (int)

true to keep sending the username and password when following locations (using CURLOPT_FOLLOWLOCATION), even when the hostname has changed.

CURLOPT_UPKEEP_INTERVAL_MS (int)

Some protocols have "connection upkeep" mechanisms. These mechanisms usually send some traffic on existing connections in order to keep them alive. This option defines the connection upkeep interval. Currently, the only protocol with a connection upkeep mechanism is HTTP/2. When the connection upkeep interval is exceeded, an HTTP/2 PING frame is sent on the connection. Default is 60 seconds. Available as of PHP 8.2.0 and cURL 7.62.0

CURLOPT_UPLOAD (int)

true to prepare for an upload.

CURLOPT_UPLOAD_BUFFERSIZE (int)

Preferred buffer size in bytes for the cURL upload buffer. The upload buffer size by default is 64 kilobytes. The maximum buffer size allowed to be set is 2 megabytes. The minimum buffer size allowed to be set is 16 kilobytes. Available as of PHP 8.2.0 and cURL 7.62.0

CURLOPT_URL (int)

The URL to fetch. This can also be set when initializing a session with curl_init().

CURLOPT_USE_SSL (int)

Sets the desired level of SSL/TLS for the transfer when using FTP, SMTP, POP3, IMAP, etc. These are all protocols that start out plain text and get "upgraded" to SSL using the STARTTLS command. Set to one of the following: CURLUSESSL_NONE, CURLUSESSL_TRY, CURLUSESSL_CONTROL or CURLUSESSL_ALL. Available as of cURL 7.17.0.

CURLOPT_USERAGENT (int)

The contents of the "User-Agent: " header to be used in a HTTP request.

CURLOPT_USERNAME (int)

The user name to use in authentication. Available as of cURL 7.19.1

CURLOPT_USERPWD (int)

A username and password formatted as "[username]:[password]" to use for the connection.

CURLOPT_VERBOSE (int)

true to output verbose information. Writes output to STDERR, or the file specified using CURLOPT_STDERR.

CURLOPT_WILDCARDMATCH (int)

Set to 1 to transfer multiple files according to a filename pattern. The pattern can be specified as part of the CURLOPT_URL option, using an fnmatch-like pattern (Shell Pattern Matching) in the last part of URL (filename). Available as of cURL 7.21.0.

CURLOPT_WRITEFUNCTION (int)

A callback accepting two parameters. The first is the cURL resource, and the second is a string with the data to be written. The data must be saved by this callback. It must return the exact number of bytes written or the transfer will be aborted with an error.

CURLOPT_WRITEHEADER (int)

The file that the header part of the transfer is written to.

CURLOPT_WS_OPTIONS (int)

Available as of PHP 8.3.0 and cURL 7.86.0

CURLOPT_XFERINFOFUNCTION (int)

A callback accepting two parameters. Has a similar purpose as CURLOPT_PROGRESSFUNCTION but is more modern and the preferred option from cURL. Available as of PHP 8.2.0 and cURL 7.32.0.

CURLOPT_XOAUTH2_BEARER (int)

Specifies the OAuth 2.0 access token. Available as of PHP 7.0.7 and cURL 7.33.0

curl_share_setopt()
常量 描述
CURL_LOCK_DATA_CONNECT (int) 共享/取消共享连接缓存。自 PHP 7.3.0 和 cURL 7.10.0 起可用
共享/取消共享 cookie 数据。
CURL_LOCK_DATA_DNS (int) 共享/取消共享 DNS 缓存。注意,当使用 cURL 多句柄时,默认情况下添加到同一个多句柄的所有句柄将共享 DNS 缓存。
CURL_LOCK_DATA_PSL (int) 共享/取消共享公共后缀列表。自 PHP 7.3.0 和 cURL 7.61.0 起可用
CURL_LOCK_DATA_SSL_SESSION (int) 共享/取消共享 SSL 的 session ID,从而在重新连接到同一服务器时减少 SSL 握手所需的时间。请注意,默认情况下在同一句柄内会重用 SSL 会话 ID。
CURLSHOPT_NONE (int)
CURLSHOPT_SHARE (int) 指定应共享的数据类型。
CURLSHOPT_UNSHARE (int) 指定不应共享的数据类型。
curl_getinfo()
常量 描述
CURLINFO_APPCONNECT_TIME (int) 从建立 SSL/SSH 连接/握手起,到与远程主机完成连接所花费的秒数
CURLINFO_APPCONNECT_TIME_T (int) 从建立 SSL/SSH 连接/握手起,到与远程主机完成连接所花费的微秒数。自 PHP 7.3.0 和 cURL 7.61.0 起可用
CURLINFO_CAINFO (int) 默认内置 CA 证书位置。自 PHP 8.3.0 和 cURL 7.84.0 起可用
CURLINFO_CAPATH (int) 默认内置 CA 证书路径。自 PHP 8.3.0 和 cURL 7.84.0 起可用
CURLINFO_CERTINFO (int) TLS 证书链
CURLINFO_CONDITION_UNMET (int) 不满足时间条件的信息
CURLINFO_CONNECT_TIME (int) 建立连接所花费的秒数
CURLINFO_CONNECT_TIME_T (int) 从开始到完成连接远程主机(或代理)所花费的总微秒数。自 PHP 7.3.0 和 cURL 7.61.0 起可用
CURLINFO_CONTENT_LENGTH_DOWNLOAD (int) 从 "Content-Length:" 字段读取的下载内容长度 (单位:字节)
CURLINFO_CONTENT_LENGTH_DOWNLOAD_T (int) 下载的 content-length。该值从 "Content-Length:" 字段读取。如果无法得知大小,则为 -1。自 PHP 7.3.0 和 cURL 7.55.0 起可用
CURLINFO_CONTENT_LENGTH_UPLOAD (int) 指定上传大小
CURLINFO_CONTENT_LENGTH_UPLOAD_T (int) 指定上传大小。如果大小未知,则为 -1。自 PHP 7.3.0 和 cURL 7.55.0 起可用
CURLINFO_CONTENT_TYPE (int) 已请求的文档的 Content-Type。NULL 表示服务器未发送有效的 Content-Type header。
CURLINFO_COOKIELIST (int) 所以已知的 cookie
CURLINFO_EFFECTIVE_METHOD (int) 获取最后使用的 HTTP 方法。
CURLINFO_EFFECTIVE_URL (int) 最后有效的 URL
CURLINFO_FILETIME (int) 启用 CURLOPT_FILETIME 时,检索文档的远程时间;如果返回 -1,则表示文档的时间未知。
CURLINFO_FILETIME_T (int) 检索文档的远程时间 (Unix 时间戳),它是 CURLINFO_FILETIME 的替代方案,允许 32 位长整型的系统提取超出 32 位时间戳范围的日期。自 PHP 7.3.0 和 cURL 7.59.0 起可用
CURLINFO_FTP_ENTRY_PATH (int) FTP 服务器中的条目路径
CURLINFO_HEADER_OUT (int) 已发送的请求字符串。如果要生效,需要调用 curl_setopt() 函数将 CURLINFO_HEADER_OUT 选项添加到句柄中
CURLINFO_HEADER_SIZE (int) 所有检索到的 header 总大小
CURLINFO_HTTPAUTH_AVAIL (int) 之前的响应中,用位掩码表示对应可用的身份验证方法
CURLINFO_HTTP_CODE (int) 最后的响应码。自 cURL 7.10.8 起,这是 CURLINFO_RESPONSE_CODE 的遗留别名。
CURLINFO_HTTP_CONNECTCODE (int) CONNECT 响应码
CURLINFO_HTTP_VERSION (int) 上次 HTTP 连接中使用的版本。返回值将是定义的 CURL_HTTP_VERSION_* 常量中的一个,或者如果无法确定版本,则返回 0。自 PHP 7.3.0 和 cURL 7.50.0 起可用
CURLINFO_LASTONE (int) libcurl 中底层 CURLINFO 枚举中的最后一个枚举值。
CURLINFO_LOCAL_IP (int) 最近连接的本地 (源) IP 地址
CURLINFO_LOCAL_PORT (int) 最近连接的本地 (源) 端口
CURLINFO_NAMELOOKUP_TIME (int) 域名解析完成所需秒数
CURLINFO_NAMELOOKUP_TIME_T (int) 域名解析完成所需的微秒数。自 PHP 7.3.0 和 cURL 7.61.0 起可用
CURLINFO_NUM_CONNECTS (int) 为完成上次传输,cURL 创建的连接数
CURLINFO_OS_ERRNO (int) 连接失败的错误码 (Errno)。该数字与操作系统和系统相关。
CURLINFO_PRETRANSFER_TIME (int) 从开始到文件传输开始之前的秒数
CURLINFO_PRETRANSFER_TIME_T (int) 从开始到文件传输即将开始为止所花费的微秒数。自 PHP 7.3.0 和 cURL 7.61.0 起可用
CURLINFO_PRIMARY_IP (int) 最近连接的目标 IP 地址
CURLINFO_PRIMARY_PORT (int) 最近连接的目标端口
CURLINFO_PRIVATE (int) 与 CURL 句柄相关的私有数据,先前使用 curl_setopt()CURLOPT_PRIVATE 选项设置
CURLINFO_PROTOCOL (int) 上次 HTTP 连接使用的协议。返回值将是 CURLPROTO_* 值之一。自 PHP 7.3.0 和 cURL 7.52.0 起可用
CURLINFO_PROXYAUTH_AVAIL (int) 之前的响应中,用位掩码表示对应可用的代理身份验证方法
CURLINFO_PROXY_ERROR (int) 详细的 (SOCKS) 代理错误代码。当最近传输返回 CURLE_PROXY 错误时,该代码会提供更多信息。返回值将是 CURLPX_* 值之一。如果没有可用的响应代码,则错误代码将是 CURLPX_OK。自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLINFO_PROXY_SSL_VERIFYRESULT (int) 请求(使用 CURLOPT_PROXY_SSL_VERIFYPEER 选项)时,证书的验证结果。仅 HTTPS 代理有效。自 PHP 7.3.0 和 cURL 7.52.0 起可用
CURLINFO_REDIRECT_COUNT (int) 启用 CURLOPT_FOLLOWLOCATION 时的重定向次数。
CURLINFO_REDIRECT_TIME (int) 启用 CURLOPT_FOLLOWLOCATION 选项后,最终事务开始前所有重定向步骤花费的秒数。
CURLINFO_REDIRECT_TIME_T (int) 最终事务开始前所有重定向步骤(包含域名解析、连接、传输前预处理、传输)花费的秒数。自 PHP 7.3.0 和 cURL 7.61.0 起可用
CURLINFO_REDIRECT_URL (int) 禁用 CURLOPT_FOLLOWLOCATION 选项:在上一次事务中找到的重定向 URL,接下来应手动请求。启用 CURLOPT_FOLLOWLOCATION 选项:此为空。此情况下的重定向 URL 可在 CURLINFO_EFFECTIVE_URL 中找到。
CURLINFO_REFERER (int) Referer header。自 PHP 8.2.0 和 cURL 7.76.0 起可用
CURLINFO_REQUEST_SIZE (int) 发出的请求总大小,目前仅适用于 HTTP 请求
CURLINFO_RESPONSE_CODE (int) 最后一个响应代码。自 cURL 7.10.8 起可用
CURLINFO_RETRY_AFTER (int) Retry-After header 中的信息,如果没有有效的 header 则为零。自 PHP 8.2.0 和 cURL 7.66.0 起可用
CURLINFO_RTSP_CLIENT_CSEQ (int) 下一个 RTSP 客户端 CSeq
CURLINFO_RTSP_CSEQ_RECV (int) 最近检索的 CSeq
CURLINFO_RTSP_SERVER_CSEQ (int) 下一个 RTSP 服务器 CSeq
CURLINFO_RTSP_SESSION_ID (int) RTSP session ID
CURLINFO_SCHEME (int) 用于最近连接的 URL scheme。自 PHP 7.3.0 和 cURL 7.52.0 起可用
CURLINFO_SIZE_DOWNLOAD (int) 下载的总字节数
CURLINFO_SIZE_DOWNLOAD_T (int) 已下载的总字节数。该数字仅适用于最近一次传输,每次新传输都会重新设置。自 PHP 7.3.0 和 cURL 7.50.0 起可用
CURLINFO_SIZE_UPLOAD (int) 上传的总字节数
CURLINFO_SIZE_UPLOAD_T (int) 上传的总字节数。自 PHP 7.3.0 和 cURL 7.50.0 起可用
CURLINFO_SPEED_DOWNLOAD (int) 平均下载速度
CURLINFO_SPEED_DOWNLOAD_T (int) curl 测量的完整下载的平均下载速度(以字节/秒为单位)。自 PHP 7.3.0 和 cURL 7.50.0 开始可用
CURLINFO_SPEED_UPLOAD (int) Average upload speed
CURLINFO_SPEED_UPLOAD_T (int) curl 测量的完整上传过程的平均上传速度(以字节/秒为单位)。自 PHP 7.3.0 和 cURL 7.50.0 开始可用
CURLINFO_SSL_ENGINES (int) 支持 OpenSSL 加密引擎
CURLINFO_SSL_VERIFYRESULT (int) 通过设置 CURLOPT_SSL_VERIFYPEER 请求 SSL 认证验证的结果
CURLINFO_STARTTRANSFER_TIME (int) 第一个字节即将被传输的时间(以秒为单位)
CURLINFO_STARTTRANSFER_TIME_T (int) 从开始到接收到第一个字节时所花费的时间(以微秒为单位)。自 PHP 7.3.0 和 cURL 7.61.0 开始可用
CURLINFO_TOTAL_TIME (int) 上次传输的总事务时间(秒)
CURLINFO_TOTAL_TIME_T (int) 上次传输的总时间(以微秒为单位),包括名称解析、TCP 连接等。自 PHP 7.3.0 和 cURL 7.61.0 开始可用
curl_multi_setopt()
常量 描述
CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE (int) 指定用于管道处理的块长度阈值(以字节为单位)。自 PHP 7.0.7 和 cURL 7.30.0 起可用
CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE (int) 指定用于管道惩罚(pipelining penalty)的长度阈值(以字节为单位)。自 PHP 7.0.7 和 cURL 7.30.0 起可用
CURLMOPT_MAXCONNECTS (int) 指定 libcurl 可以缓存的最大同时打开的连接数。默认情况下,这个大小会自动扩展到通过 curl_multi_add_handle() 添加的句柄数的四倍。当缓存已满时,cURL 会关闭缓存中最旧的一个连接,以防止打开的连接数继续增加。自 cURL 7.16.3 起可用
CURLMOPT_MAX_CONCURRENT_STREAMS (int) 指定 cURL 在使用 HTTP/2 连接中应支持的最大并发流数量。有效值范围是从 121474836472^31 - 1)。这里设置的值将根据其他系统资源属性来确定是否执行。默认值是 100。自 PHP 8.2.0 和 cURL 7.67.0 起可用。
CURLMOPT_MAX_HOST_CONNECTIONS (int) 指定单个主机的最大连接数。自 PHP 7.0.7 和 cURL 7.30.0 起可用
CURLMOPT_MAX_PIPELINE_LENGTH (int) 指定管道中的最大请求数。自 PHP 7.0.7 和 cURL 7.30.0 起可用
CURLMOPT_MAX_TOTAL_CONNECTIONS (int) 指定同时打开的最大连接数。自 PHP 7.0.7 和 cURL 7.30.0 起可用
CURLMOPT_PIPELINING (int) 传递 1 启用或传递 0 禁用。在多句柄上启用管道将使其尝试对使用此句柄的传输尽可能执行 HTTP 管道操作。这意味着如果添加的第二个请求可以使用已有连接,则第二个请求将在同一连接上使用“管道”。自 cURL 7.43.0 起,该值是位掩码,传递 2 将尝试在现有的 HTTP/2 连接上多路复用新传输。传递 3 指示 cURL 请求彼此独立的管道和多路复用。自 cURL 7.62.0 起,设置管道 bit 没有效果。除了整数文字,还可以使用 CURLPIPE_* 常量。自 cURL 7.16.0 起可用。
CURLMOPT_PUSHFUNCTION (int)

传递 callable 以注册处理服务器推送且应具有以下签名:

pushfunction(resource $parent_ch, resource $pushed_ch, array $headers): int
parent_ch
父级 cURL 句柄(客户端发出的请求)。
pushed_ch
推送请求的新 cURL 句柄。
headers
推送 promise header。
推送函数如果可以处理推送应该返回 CURL_PUSH_OK,或者返回 CURL_PUSH_DENY 拒绝。自 PHP 7.1.0 和 cURL 7.44.0 起可用。

cURL 协议常量
常量 描述
CURLPROTO_ALL (int)
CURLPROTO_DICT (int)
CURLPROTO_FILE (int)
CURLPROTO_FTP (int)
CURLPROTO_FTPS (int)
CURLPROTO_GOPHER (int)
CURLPROTO_HTTP (int)
CURLPROTO_HTTPS (int)
CURLPROTO_IMAP (int)
CURLPROTO_IMAPS (int)
CURLPROTO_LDAP (int)
CURLPROTO_LDAPS (int)
CURLPROTO_MQTT (int) 自 PHP 8.2.0 和 cURL 7.71.0 起可用。
CURLPROTO_POP3 (int)
CURLPROTO_POP3S (int)
CURLPROTO_RTMP (int)
CURLPROTO_RTMPE (int)
CURLPROTO_RTMPS (int)
CURLPROTO_RTMPT (int)
CURLPROTO_RTMPTE (int)
CURLPROTO_RTMPTS (int)
CURLPROTO_RTSP (int)
CURLPROTO_SCP (int)
CURLPROTO_SFTP (int)
CURLPROTO_SMB (int) 自 PHP 7.0.7 和 cURL 7.40.0 起可用。
CURLPROTO_SMBS (int) 自 PHP 7.0.7 和 cURL 7.40.0 起可用。
CURLPROTO_SMTP (int)
CURLPROTO_SMTPS (int)
CURLPROTO_TELNET (int)
CURLPROTO_TFTP (int)
cURL 错误常量
常量 描述
CURLE_ABORTED_BY_CALLBACK (int) 回调已中止。回调向 libcurl 返回“abort”。
CURLE_BAD_CALLING_ORDER (int)
CURLE_BAD_CONTENT_ENCODING (int) 无法识别传输编码。
CURLE_BAD_DOWNLOAD_RESUME (int) 由于指定的偏移量超出了文件边界,因此无法恢复下载。
CURLE_BAD_FUNCTION_ARGUMENT (int) 调用的函数带有错误的参数。
CURLE_BAD_PASSWORD_ENTERED (int)
CURLE_COULDNT_CONNECT (int) 无法连接到主机或代理。
CURLE_COULDNT_RESOLVE_HOST (int) 无法解析主机。指定的远程主机无法解析。
CURLE_COULDNT_RESOLVE_PROXY (int) 无法解析代理。无法解析给定的代理主机。
CURLE_FAILED_INIT (int) 初始化代码失败。这可能是内部错误或程序,或者是资源问题,导致在初始化时无法完成一些基本操作。
CURLE_FILESIZE_EXCEEDED (int) 超出最大文件大小。
CURLE_FILE_COULDNT_READ_FILE (int) 无法打开 FILE:// 指定的文件。很可能是因为文件路径未识别现有文件或由于缺乏适当的文件权限。
CURLE_FTP_ACCESS_DENIED (int)
CURLE_FTP_BAD_DOWNLOAD_RESUME (int)
CURLE_FTP_CANT_GET_HOST (int) 用于查找新连接的主机发生内部故障。
CURLE_FTP_CANT_RECONNECT (int)
CURLE_FTP_COULDNT_GET_SIZE (int)
CURLE_FTP_COULDNT_RETR_FILE (int) 这要么是对“RETR”命令的意外回复,要么是零字节传输完成。
CURLE_FTP_COULDNT_SET_ASCII (int)
CURLE_FTP_COULDNT_SET_BINARY (int)
CURLE_FTP_COULDNT_STOR_FILE (int)
CURLE_FTP_COULDNT_USE_REST (int) FTP REST 命令返回错误。如果服务器正常,这种情况绝不会发生。
CURLE_FTP_PARTIAL_FILE (int)
CURLE_FTP_PORT_FAILED (int) FTP PORT 命令返回错误。这种情况大多发生在为 libcurl 指定的地址没有足够好。参阅 CURLOPT_FTPPORT
CURLE_FTP_QUOTE_ERROR (int)
CURLE_FTP_SSL_FAILED (int)
CURLE_FTP_USER_PASSWORD_INCORRECT (int)
CURLE_FTP_WEIRD_227_FORMAT (int) FTP 服务器返回 227-line 作为对 PASV 命令的响应。如果 libcurl 无法解析该行,则会传回此返回代码。
CURLE_FTP_WEIRD_PASS_REPLY (int) 将 FTP 密码发送到服务器后,libcurl 需要收到正确的回复。此错误代码表示返回了意外代码。
CURLE_FTP_WEIRD_PASV_REPLY (int) libcurl 无法从服务器获取合理的结果作为对 PASV 或 EPSV 命令的响应。服务器存在缺陷。
CURLE_FTP_WEIRD_SERVER_REPLY (int) 服务器发送了 libcurl 无法解析的数据。自 cURL 7.51.0 起,此错误代码为 CURLE_WEIRD_SERVER_REPLY
CURLE_FTP_WEIRD_USER_REPLY (int)
CURLE_FTP_WRITE_ERROR (int)
CURLE_FUNCTION_NOT_FOUND (int) 未找到函数。未找到所需的 zlib 函数。
CURLE_GOT_NOTHING (int) 服务器没有返回任何内容,在这种情况下,没有得到任何内容视为错误。
CURLE_HTTP_NOT_FOUND (int)
CURLE_HTTP_PORT_FAILED (int)
CURLE_HTTP_POST_ERROR (int) 这是一个奇怪的错误,主要由于内部混乱而发生。
CURLE_HTTP_RANGE_ERROR (int)
CURLE_HTTP_RETURNED_ERROR (int) 如果 CURLOPT_FAILONERROR 设置为 true 并且 HTTP 服务器返回大于或等于 400 的错误代码,则返回此值。
CURLE_LDAP_CANNOT_BIND (int) LDAP 无法绑定。LDAP 绑定操作失败。
CURLE_LDAP_INVALID_URL (int)
CURLE_LDAP_SEARCH_FAILED (int) LDAP 搜索失败。
CURLE_LIBRARY_NOT_FOUND (int)
CURLE_MALFORMAT_USER (int)
CURLE_OBSOLETE (int)
CURLE_OK (int) 一切顺利。一切照常进行。
CURLE_OPERATION_TIMEDOUT (int) 操作超时。根据条件已达到指定的超时时限。
CURLE_OPERATION_TIMEOUTED (int)
CURLE_OUT_OF_MEMORY (int) 内存分配请求失败。
CURLE_PARTIAL_FILE (int) 文件传输的大小跟预期的不一致。当服务器首先报告预期的传输大小,然后提供与先前指定的大小不匹配的数据时,就会发生这种情况。
CURLE_PROXY (int) 代理握手错误。CURLINFO_PROXY_ERROR 提供有关特定问题的额外详细信息。自 PHP 8.2.0 和 cURL 7.73.0 起可用
CURLE_READ_ERROR (int) 读取本地文件时出现问题,或者读取回调返回错误。
CURLE_RECV_ERROR (int) 接收网络数据失败。
CURLE_SEND_ERROR (int) 发送网络数据失败。
CURLE_SHARE_IN_USE (int)
CURLE_SSH (int) SSH 会话期间发生未指定的错误。自 cURL 7.16.1 起可用。
CURLE_SSL_CACERT (int)
CURLE_SSL_CACERT_BADFILE (int) 读取 SSL CA 证书时出现问题。
CURLE_SSL_CERTPROBLEM (int) 本地客户端证书有问题。
CURLE_SSL_CIPHER (int) 无法使用指定的密码。
CURLE_SSL_CONNECT_ERROR (int) SSL/TLS 握手中某处出现问题。读取错误缓冲区中的消息可提供有关该问题的更多详细信息。可能是证书(文件格式、路径、权限)、密码等。
CURLE_SSL_ENGINE_NOTFOUND (int) 未找到指定的加密引擎。
CURLE_SSL_ENGINE_SETFAILED (int) 无法将选定的 SSL 加密引擎设置为默认值。
CURLE_SSL_PEER_CERTIFICATE (int)
CURLE_SSL_PINNEDPUBKEYNOTMATCH (int) 无法匹配使用 CURLOPT_PINNEDPUBLICKEY 指定的固定密钥。
CURLE_TELNET_OPTION_SYNTAX (int)
CURLE_TOO_MANY_REDIRECTS (int) 重定向次数过多。在进行重定向时,libcurl 达到最大数量。可以使用 CURLOPT_MAXREDIRS 设置最大值。
CURLE_UNKNOWN_TELNET_OPTION (int)
CURLE_UNSUPPORTED_PROTOCOL (int) 传递给 libcurl 的 URL 使用了 libcurl 不支持的协议。问题可能是未使用的编译时选项、拼写错误的协议字符串或 libcurl 没有编码的协议。
CURLE_URL_MALFORMAT (int) URL 格式不正确。
CURLE_URL_MALFORMAT_USER (int)
CURLE_WEIRD_SERVER_REPLY (int) 服务器发送的数据 libcurl 无法解析。在 cURL 7.51.0 之前,此错误代码称为 CURLE_FTP_WEIRD_SERVER_REPLY。自 PHP 7.3.0 和 cURL 7.51.0 起可用
CURLE_WRITE_ERROR (int) 将接收的数据写入本地文件时发生错误,或者从写入回调向 libcurl 返回错误。
curl_multi_* 状态常量
常量 描述
CURLM_ADDED_ALREADY (int) 重复添加句柄到多句柄。自 cURL 7.32.1 起可用。
CURLM_BAD_EASY_HANDLE (int) 句柄无效或者不正确。这可能意味着这不是句柄或者该句柄已经被自身或者其他多句柄使用了。
CURLM_BAD_HANDLE (int) 传入的句柄不是有效的多句柄。
CURLM_CALL_MULTI_PERFORM (int) 从 cURL 7.20.0 起,不再使用此常量。在 cURL 7.20.0 之前,如果在返回任何其他常量之前调用 curl_multi_select() 或类似函数时,curl_multi_exec() 可能会返回此状态。
CURLM_INTERNAL_ERROR (int) 内部 libcurl 错误。
CURLM_OK (int) 没有错误。
CURLM_OUT_OF_MEMORY (int) 处理多句柄时内存不足。
curl_pause()
常量 描述
CURLPAUSE_ALL (int) 暂停发送和接收数据。自 cURL 7.18.0 起可用。
CURLPAUSE_CONT (int) 取消暂停发送和接收数据。自 cURL 7.18.0 起可用。
CURLPAUSE_RECV (int) 暂停接收数据。自 cURL 7.18.0 起可用。
CURLPAUSE_RECV_CONT (int) 取消暂停接收数据。自 cURL 7.18.0 起可用。
CURLPAUSE_SEND (int) 暂停发送数据。自 cURL 7.18.0 起可用。
CURLPAUSE_SEND_CONT (int) 取消暂停发送数据。自 cURL 7.18.0 起可用。
添加备注

用户贡献的备注 5 notes

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30
nimasdj [AT] yahoo [DOT] com
9 years ago
I hope this would be useful to convert error codes:

<?php
$curl_errno
= array(
1 => "CURLE_UNSUPPORTED_PROTOCOL",
2 => "CURLE_FAILED_INIT",
3 => "CURLE_URL_MALFORMAT",
4 => "CURLE_URL_MALFORMAT_USER",
5 => "CURLE_COULDNT_RESOLVE_PROXY",
6 => "CURLE_COULDNT_RESOLVE_HOST",
7 => "CURLE_COULDNT_CONNECT",
8 => "CURLE_FTP_WEIRD_SERVER_REPLY",
9 => "CURLE_FTP_ACCESS_DENIED",
10 => "CURLE_FTP_USER_PASSWORD_INCORRECT",
11 => "CURLE_FTP_WEIRD_PASS_REPLY",
12 => "CURLE_FTP_WEIRD_USER_REPLY",
13 => "CURLE_FTP_WEIRD_PASV_REPLY",
14 => "CURLE_FTP_WEIRD_227_FORMAT",
15 => "CURLE_FTP_CANT_GET_HOST",
16 => "CURLE_FTP_CANT_RECONNECT",
17 => "CURLE_FTP_COULDNT_SET_BINARY",
18 => "CURLE_FTP_PARTIAL_FILE or CURLE_PARTIAL_FILE",
19 => "CURLE_FTP_COULDNT_RETR_FILE",
20 => "CURLE_FTP_WRITE_ERROR",
21 => "CURLE_FTP_QUOTE_ERROR",
22 => "CURLE_HTTP_NOT_FOUND or CURLE_HTTP_RETURNED_ERROR",
23 => "CURLE_WRITE_ERROR",
24 => "CURLE_MALFORMAT_USER",
25 => "CURLE_FTP_COULDNT_STOR_FILE",
26 => "CURLE_READ_ERROR",
27 => "CURLE_OUT_OF_MEMORY",
28 => "CURLE_OPERATION_TIMEDOUT or CURLE_OPERATION_TIMEOUTED",
29 => "CURLE_FTP_COULDNT_SET_ASCII",
30 => "CURLE_FTP_PORT_FAILED",
31 => "CURLE_FTP_COULDNT_USE_REST",
32 => "CURLE_FTP_COULDNT_GET_SIZE",
33 => "CURLE_HTTP_RANGE_ERROR",
34 => "CURLE_HTTP_POST_ERROR",
35 => "CURLE_SSL_CONNECT_ERROR",
36 => "CURLE_BAD_DOWNLOAD_RESUME or CURLE_FTP_BAD_DOWNLOAD_RESUME",
37 => "CURLE_FILE_COULDNT_READ_FILE",
38 => "CURLE_LDAP_CANNOT_BIND",
39 => "CURLE_LDAP_SEARCH_FAILED",
40 => "CURLE_LIBRARY_NOT_FOUND",
41 => "CURLE_FUNCTION_NOT_FOUND",
42 => "CURLE_ABORTED_BY_CALLBACK",
43 => "CURLE_BAD_FUNCTION_ARGUMENT",
44 => "CURLE_BAD_CALLING_ORDER",
45 => "CURLE_HTTP_PORT_FAILED",
46 => "CURLE_BAD_PASSWORD_ENTERED",
47 => "CURLE_TOO_MANY_REDIRECTS",
48 => "CURLE_UNKNOWN_TELNET_OPTION",
49 => "CURLE_TELNET_OPTION_SYNTAX",
50 => "CURLE_OBSOLETE",
51 => "CURLE_SSL_PEER_CERTIFICATE",
52 => "CURLE_GOT_NOTHING",
53 => "CURLE_SSL_ENGINE_NOTFOUND",
54 => "CURLE_SSL_ENGINE_SETFAILED",
55 => "CURLE_SEND_ERROR",
56 => "CURLE_RECV_ERROR",
57 => "CURLE_SHARE_IN_USE",
58 => "CURLE_SSL_CERTPROBLEM",
59 => "CURLE_SSL_CIPHER",
60 => "CURLE_SSL_CACERT",
61 => "CURLE_BAD_CONTENT_ENCODING",
62 => "CURLE_LDAP_INVALID_URL",
63 => "CURLE_FILESIZE_EXCEEDED",
64 => "CURLE_FTP_SSL_FAILED",
79 => "CURLE_SSH"
);
?>
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17
s dot coletta at unidata dot it
15 years ago
Beware of CURLE_* constants!

On the official site:

http://curl.haxx.se/libcurl/c/libcurl-errors.html

some constants are different, some missing compared to the PHP implementation.

Some examples:

in PHP the curl error number 28 is called

CURLE_OPERATION_TIMEOUTED

while in the official site is:

CURLE_OPERATION_TIMEDOUT

So if you use the second, it won't march the error 28 because in PHP it is not defined that way.

The same is for these:

CURLE_HTTP_RETURNED_ERROR
CURLE_UPLOAD_FAILED
CURLE_INTERFACE_FAILED
CURLE_SSL_CERTPROBLEM
CURLE_SEND_FAIL_REWIND
CURLE_LOGIN_DENIED
CURLE_AGAIN

that are in someway named differently or missing from PHP.
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8
uramihsayibok, gmail, com
9 years ago
Regarding CURLE_OPERATION_TIMEDOUT vs. CURLE_OPERATION_TIMEOUTED:

Originally cURL had the constant named TIMEOUTED (read: "timeout-ed"). This was changed[1] in 2007 and v7.17.0 to be TIMEDOUT (read: "timed out") and the old constant kept in place as an alias.

PHP started off using TIMEOUTED as well. The TIMEDOUT constant was added[2] in 2012 and v5.5.0 and the old constant was *kept in place*.

If you ask me, the TIMEDOUT constant reads more nicely (not to mention is technically the correct one to use) and as long as you're using PHP 5.5+ then it is available. If you have to support older versions then I suggest you keep using the new constant and add a polyfill like

<?php
if (version_compare(PHP_VERSION, "5.5.0", "<")) {
define("CURLE_OPERATION_TIMEDOUT", CURLE_OPERATION_TIMEOUTED);
}
?>

or

<?php
// PHP <5.5.0
defined("CURLE_OPERATION_TIMEDOUT") || define("CURLE_OPERATION_TIMEDOUT", CURLE_OPERATION_TIMEOUTED);
?>

to be removed once you stop supporting them.

[1] https://github.com/bagder/curl/commit/9f44a95522162c0f4a61093efe1bf1f58b087358#diff-d8c6cb80505e0f7d5e27fca2a682aa34L119
[2] https://github.com/php/php-src/commit/9ab45d3edbafa3ee751472c3f8d1fb3f51f38cf1#diff-ac978e3de205f1d14eb960e0eb15ef24R723
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9
Ron
17 years ago
<?
/*
* Author: Ron
* Released: August 4, 2007
* Description: An example of the disguise_curl() function in order to grab contents from a website while remaining fully camouflaged by using a fake user agent and fake headers.
*/

$url = 'http://www.ericgiguere.com/tools/http-header-viewer.html';

// disguises the curl using fake headers and a fake user agent.
function disguise_curl($url)
{
$curl = curl_init();

// Setup headers - I used the same headers from Firefox version 2.0.0.6
// below was split up because php.net said the line was too long. :/
$header[0] = "Accept: text/xml,application/xml,application/xhtml+xml,";
$header[0] .= "text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";
$header[] = "Cache-Control: max-age=0";
$header[] = "Connection: keep-alive";
$header[] = "Keep-Alive: 300";
$header[] = "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7";
$header[] = "Accept-Language: en-us,en;q=0.5";
$header[] = "Pragma: "; // browsers keep this blank.

curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_USERAGENT, 'Googlebot/2.1 (+http://www.google.com/bot.html)');
curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
curl_setopt($curl, CURLOPT_REFERER, 'http://www.google.com');
curl_setopt($curl, CURLOPT_ENCODING, 'gzip,deflate');
curl_setopt($curl, CURLOPT_AUTOREFERER, true);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_TIMEOUT, 10);

$html = curl_exec($curl); // execute the curl command
curl_close($curl); // close the connection

return $html; // and finally, return $html
}

// uses the function and displays the text off the website
$text = disguise_curl($url);
echo
$text;
?>

~Ron
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-1
jrschlosser
6 years ago
In PHP version 7.1.11 there is also constants for HTTP/2 :
CURL_VERSION_HTTP2 = 65536 (1 << 16)
CURL_HTTP_VERSION_2_0 = 3

I don't know the first version of PHP that defines it.
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