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@ 2016-08-05T09:27:12Z

<?php

$nickname = '游客100000';

preg_match('/^游客[0-9]+/', $nickname, $match);

var_dump($match);

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
preg_match: documentation ( source)

preferences:dark modelive preview

54.91 ms | 402 KiB | 5 Q