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@ 2014-01-13T14:19:12Z

<?php

var_dump(
preg_match('|^[0-9][0-9][0-9]$|i', '')
    );

Output
Performance
VLD
References
Branches

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

preferences:dark modelive preview

31.04 ms | 402 KiB | 5 Q