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@ 2014-03-20T08:58:42Z

<?php

var_dump(preg_match('/[^a-zA-Z0-9.\-\s]+/', '-?'));

Output
Performance
VLD
References
Branches

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

preferences:dark modelive preview

51.32 ms | 402 KiB | 5 Q