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@ 2019-11-05T09:20:49Z

<?php
$string = "ABCD\xc3";
$r = preg_match('/^./u',$string, $match);
var_dump($r);

Output
Performance
VLD
References
Branches

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

preferences:dark modelive previewkey bindings

47.59 ms | 1617 KiB | 5 Q