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Session::generateUUID — Get new UUID
Generate a Universal Unique IDentifier (UUID) generated according to » RFC 4122.
此函数没有参数。
The UUID; a string with a length of 32.
Example #1 mysql_xdevapi\Session::generateUuid() example
<?php
$session = mysql_xdevapi\getSession("mysqlx://user:password@localhost");
$uuid = $session->generateUuid();
var_dump($uuid);
以上例程的输出类似于：
string(32) "484B18AC7980F8D4FE84613CDA5EE84B"