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이 문서에서는 PHP 중국어 웹사이트 매뉴얼 풀어 주다
(PECL mysqlnd-uh >= 1.0.0-alpha)
mysqlnd_uh_convert_to_mysqlnd — Converts a MySQL connection handle into a mysqlnd connection handle
&$mysql_connection
)Converts a MySQL connection handle into a mysqlnd connection handle. After conversion you can execute mysqlnd library calls on the connection handle. This can be used to access mysqlnd functionality not made available through user space API calls.
The function can be disabled with
mysqlnd_uh.enable .
If mysqlnd_uh.enable
is set to FALSE
the function will not install the proxy and
always return TRUE
. Additionally, an error of the
type E_WARNING may be emitted. The error message may
read like PHP Warning: mysqlnd_uh_convert_to_mysqlnd(): (Mysqlnd User Handler)
The plugin has been disabled by setting the configuration parameter mysqlnd_uh.enable = false.
You are not allowed to call this function [...].
MySQL connection handle
A MySQL connection handle of type mysql, mysqli or PDO_MySQL.
A mysqlnd connection handle.
版本 | 说明 |
---|---|
5.4.0 |
The mysql_connection parameter can now be of type
mysql, PDO_MySQL, or mysqli.
Before, only the mysqli type was allowed.
|
Example #1 mysqlnd_uh_convert_to_mysqlnd() example
<?php
$mysql_connection = new PDO ( "mysql:host=localhost;dbname=test" , "root" , "" );
$mysqlnd = mysqlnd_uh_convert_to_mysqlnd ( $mysql_connection );
$obj = new MySQLndUHConnection ();
var_dump ( $obj -> getThreadId ( $mysqlnd ));
var_dump ( $mysql_connection -> query ( "SELECT CONNECTION_ID()" )-> fetchAll ());
?>
以上例程会输出:
int(27054) array(1) { [0]=> array(2) { ["CONNECTION_ID()"]=> string(5) "27054" [0]=> string(5) "27054" } }