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@ 2015-04-10T12:07:17Z

<?php

if( preg_match( '[^a-zA-Z0-9\_\-]', "index" ) )
{
    echo "404.php";
} else {
    echo "nyert";
}

Output
Performance
VLD
References
Branches

preg_match: documentation ( source)

preferences:dark modelive preview

39.88 ms | 402 KiB | 5 Q