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@ 2013-12-29T13:39:01Z

<?php

    $badwords = 'base64_decode+union+select';
    foreach ($_GET as $key=>&$value){
        foreach(explode('+',$badwords) as $badware){
            $value=str_replace($badware, $empty_string,$value);
        }
    }

Output
Performance
VLD
References
Branches

str_replace: documentation ( source)
explode: documentation ( source)

preferences:dark modelive preview

38.56 ms | 402 KiB | 5 Q