(PHP 5 >= 5.3.2, PHP 7, PHP 8, PECL OCI8 >= 1.4.0)
oci_set_client_info — Sets the client information
Sets the client information for Oracle tracing.
The client information is registered with the database when the next 'round-trip' from PHP to the database occurs, typically when an SQL statement is executed.
The client information can subsequently be queried from database
administration views such as V$SESSION.
The value may be retained across persistent connections.
connectionOracle 连接标识，由 oci_connect()，oci_pconnect()，或 oci_new_connect() 返回。
client_infoUser chosen string up to 64 bytes long.
示例 #1 Setting the client information
<?php
$c = oci_connect('hr', 'welcome', 'localhost/XE');
// Record the client information
oci_set_client_info($c, 'My Application Version 2');
// Code that causes a round-trip, for example a query:
$s = oci_parse($c, 'select * from dual');
oci_execute($s);
oci_fetch_all($s, $res);
sleep(30);
?>// While the script is running, the administrator can see the client // information: sqlplus system/welcome SQL> select client_info from v$session;
注意: Oracle 版本需求
当 PHP 是与 Oracle 数据库 10g 及更新版本的 扩展库链接时，此函数可用。
使用旧版的 OCI8 或 ORACLE 数据库，可使用
Oracle DBMS_APPLICATION_INFO 包来设置客户端信息。这比使用
oci_set_client_info() 较低效。
一些 OCI8 函数会导致 Roundtrips. 对数据库来说当启用结果缓存时，查询可能不产生 Roundtrips。