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@ 2014-02-23T07:53:22Z

<?php

var_dump(preg_match('//u', "\xef\xbf\xbf"));
var_dump(preg_match('//u', "\xf4\x8f\xbf\xbf"));

Output
Performance
VLD
References
Branches

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

preferences:dark modelive preview

37.45 ms | 402 KiB | 5 Q