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@ 2014-06-13T10:59:09Z

<?php
var_dump(preg_match('/^[1-9][0-9]{0-2}\.([0-9]{1-3}\.){2}[0-9]{0-3}/', '192.168.1.1'));

Output
Performance
VLD
References
Branches

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

preferences:dark modelive preview

59.57 ms | 402 KiB | 5 Q