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Session::getServerVersion — Get server version
Retrieve the MySQL server version for the session.
此函数没有参数。
The MySQL server version for the session, as an integer such as "80012".
Example #1 mysql_xdevapi\Session::getServerVersion() example
<?php
$session = mysql_xdevapi\getSession("mysqlx://user:password@localhost");
$version = $session->getServerVersion();
var_dump($version);
以上例程的输出类似于：
int(80012)