PHP 8.4.2 Released!

    对 PUT 方法的支持

    PHP 对部分客户端具备的 HTTP PUT 方法提供了支持。PUT 请求比文件上传要简单的多，它们一般的形式为： 

    PUT /path/filename.html HTTP/1.1

    这通常意味着远程客户端会将其中的 /path/filename.html 存储到 web 目录树。让 Apache 或者 PHP 自动允许所有人覆盖 web 目录树下的任何文件显然是很不明智的。因此，要处理类似的请求，必须先告诉 web 服务器需要用特定的 PHP 脚本来处理该请求。在 Apache 下，可以用 Script 选项来设置。它可以被放置到 Apache 配置文件中几乎所有的位置。通常我们把它放置在 <Directory> 区域或者 <VirtualHost> 区域。可以用如下一行来完成该设置： 

    Script PUT /put.php

    这将告诉 Apache 将所有对 URI 的 PUT 请求全部发送到 put.php 脚本，这些 URI 必须和 PUT 命令中的内容相匹配。当然，这是建立在 PHP 支持 .php 扩展名，并且 PHP 已经在运行的假设之上。此脚本的所有 PUT 请求的目标资源必须是脚本本身，而不是上传文件本身的文件名。

    使用 PHP，可以在 put.php 中执行类似下面的操作。这会将上传文件的内容复制到服务器上的文件 myputfile.ext。在执行此文件复制之前，可能会希望执行一些检查并且验证用户身份。

    示例 #1 保存 HTTP PUT 文件

    <?php
    /* PUT 数据来自于 stdin 流 */
    $putdata = fopen("php://input", "r");

    /* 打开要写入的文件 */
    $fp = fopen("myputfile.ext", "w");

    /* 每次读取 1KB 的数据并写入到文件 */
    while ($data = fread($putdata, 1024))
    fwrite($fp, $data);

    /* 关闭流 */
    fclose($fp);
    fclose($putdata);
    ?>

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    用户贡献的备注 6 notes

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    37
    micronix at gmx dot net
    14 years ago
    Hello PHP World After many Hours of worryness :=)

    I have found the Solution for Resume or Pause Uploads
    In this Code Snippet it is the Server Side not Client on any Desktop Programm you must use byte ranges to calculate the uploaded bytes and missing of total bytes.

    Here the PHP Code

    <?php
    $CHUNK     = 8192;

    try {
    if (!(    $putData = fopen("php://input", "r")))
    throw new     Exception("Can't get PUT data.");

    // now the params can be used like any other variable
    // see below after input has finished

    $tot_write = 0;
    $tmpFileName = "/var/dev/tmp/PUT_FILE";
    // Create a temp file
    if (!is_file($tmpFileName)) {
    fclose(fopen($tmpFileName, "x")); //create the file and close it
    // Open the file for writing
    if (!($fp = fopen($tmpFileName, "w")))
    throw new     Exception("Can't write to tmp file");

    // Read the data a chunk at a time and write to the file
    while ($data = fread($putData, $CHUNK)) {
    $chunk_read = strlen($data);
    if ((    $block_write = fwrite($fp, $data)) != $chunk_read)
    throw new     Exception("Can't write more to tmp file");

    $tot_write += $block_write;
    }

    if (!    fclose($fp))
    throw new     Exception("Can't close tmp file");

    unset(    $putData);
    } else {
    // Open the file for writing
    if (!($fp = fopen($tmpFileName, "a")))
    throw new     Exception("Can't write to tmp file");

    // Read the data a chunk at a time and write to the file
    while ($data = fread($putData, $CHUNK)) {
    $chunk_read = strlen($data);
    if ((    $block_write = fwrite($fp, $data)) != $chunk_read)
    throw new     Exception("Can't write more to tmp file");

    $tot_write += $block_write;
    }

    if (!    fclose($fp))
    throw new     Exception("Can't close tmp file");

    unset(    $putData);
    }

    // Check file length and MD5
    if ($tot_write != $file_size)
    throw new     Exception("Wrong file size");

    $md5_arr = explode(' ', exec("md5sum $tmpFileName"));
    $md5 = $md5sum_arr[0];
    if (    $md5 != $md5sum)
    throw new     Exception("Wrong md5");
    } catch (    Exception $e) {
    echo     '', $e->getMessage(), "\n";
    }
    ?>
    up
    5
    arnaud at caramia dot Fr
    1 year ago
    We resolved our problem with https://pecl.php.net/package/apfd.

    It parses multipart/form-data body (files and payload) with PUT and PATCH http requests, witch was only possible before with POST http request.
    up
    2
    Oscar Fernandez Sierra
    3 years ago
    This is what worked for me. There are many examples in the web that don't work. I found in https://lornajane.net/posts/2009/putting-data-fields-with-php-curl.

    IMPORTANT: You should not use the code

    curl_setopt($ch, CURLOPT_PUT, true);

    even if it seems to be the right option (it would be the right option for a POST request, with CURLOPT_POST, but it does not work for a PUT request).

    Notice that the constant CURLOPT_CUSTOMREQUEST is used instead of CURLOPT_PUT, and that the value used is "PUT" instead of true.

    <?php

    $url     = "....."; // put your URL here

    $data = array("a" => $a);

    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "PUT");
    curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));

    $response = curl_exec($ch);
    if ( !     $response) {
    return     false;
    }
    up
    1
    polygon dot co dot in at gmail dot com
    1 year ago
    I was confused with file uploads using the PUT method.
    My concern was why can't we upload multiple files using the PUT method with streams
    PUT data comes in on the stdin stream
    $putdata = fopen("php://input", "r");
    Note the $putdata is a file pointer to the file content that is being uploaded.
    The data is received on the server on the fly (which means available as it is received)

    Secondly, when we are using parse_str(file_get_contents("php://input")).
    This means the data is completely received on the server end and is then made available to the script.

    When using fopen() one cant parse the data. This can be used when uploading a large file.
    The file may range from 100's of MBs to Gigs where streams plays a major role.

    Streams make the file data available to script in chunks instead of first saving in the temp folder.
    Hence, when using $putdata = fopen("php://input", "r"); one can't pass the payload as well.
    If someone wants to pass the payload the only option is in the URL query string.
    up
    6
    San
    10 years ago
    Instead of using fread fwrite to save uploaded content to a file.
    stream_copy_to_stream is much cleaner.
    up
    1
    willy at kochkonsult dot no
    3 years ago
    All the example code I found for using PUT with PHP always used a default hard-coded file extension for the incoming stream.

    The filename from the incoming file PUT request can't be found anywhere from the incoming request (at least I couldn't find it) but mimetype can be found in the $_SERVER global variable.

    I used this code to get the correct file extension:

    $mimeType = $_SERVER['HTTP_CONTENT_TYPE'];

    if ($mimeType!='application/pdf')
    {
    header('HTTP/1.1 405 Only PDF files allowed');
    echo("Only PDF files are allowed for upload - this file is ".$mimeType);
    die();
    }
    else $fileExtension = 'pdf';

    If you have an Apache Tika server available, that would be the best option to analyze the file content to get the mimetype, but that might not be in scope for everyone :-)
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