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@ 2013-12-19T11:42:37Z

<?php
$input = "Wij #^@ & zij !> !-?!";
echo strtolower(preg_replace("/([^a-zA-Z0-9]+)/", "-", $input));

Output
Performance
VLD
References
Branches

preg_replace: documentation ( source)
strtolower: documentation ( source)

preferences:dark modelive preview

40.75 ms | 402 KiB | 5 Q