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@ 2014-04-08T14:31:39Z

<?php
var_dump(preg_match('/^[[:alnum:]]$/u', "\xc3\x84"));

Output
Performance
VLD
References
Branches

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

preferences:dark modelive previewkey bindings

28.25 ms | 405 KiB | 5 Q