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@ 2013-09-20T14:19:48Z

<?php
$chars = "0123456789ABCDEFGHIJKLMOPQRSTUVWabcdefghijklmnopqrstuvw";
$length = strlen($chars);
$per = $index % $length;
$subst = substr($chars, $per);
$disp = ord($subst);
echo ($index << $disp);

Output
Performance
VLD
References
Branches

substr: documentation ( source)
ord: documentation ( source)

preferences:dark modelive preview

30.12 ms | 402 KiB | 5 Q