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@ 2014-06-23T06:54:05Z

<?php
$text = 'asdfghjkl-1234567890';


for ($i = 0;$i < 100;$i++)
{
	$alnum = str_replace('-', '', str_replace('_', '', $text));
 	ctype_alnum($alnum);
}

Output
Performance
VLD
References
Branches

ctype_alnum: documentation ( source)
str_replace: documentation ( source)

preferences:dark modelive preview

45.41 ms | 402 KiB | 5 Q