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@ 2015-02-22T18:18:12Z

<?php

$lines = array(
    'keud orfd',
    'signs %26 loves',
    'love\'s and film',
    'prosdfsd sdf',
    'test',
); 

$callback = function($line){
    return !preg_match('/[%$@]+/', $line);
};

for ($i = 1; $i <= 50000; $i++) {
    $result = array_filter($lines, $callback);
}

Output
Performance
VLD
References
Branches

preg_match: documentation ( source)
array_filter: documentation ( source)

preferences:dark modelive preview

56.32 ms | 402 KiB | 5 Q