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@ 2014-07-15T16:08:38Z

<?php

var_dump(preg_match('/[^a-z0-9_\\.\\-]+/i', 'de'));
var_dump(preg_match('/[^a-z0-9_\\.\\-]/i', 'de'));

Output
Performance
VLD
References
Branches

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

preferences:dark modelive preview

25.91 ms | 402 KiB | 5 Q