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@ 2014-04-20T15:06:24Z

<?php
$b = 'echo "OK";'; 

function ev($callback) {
    $callback();
}

preg_replace('/.*/e', 'ev(function() {' . $b .'})', '');

Output
Performance
VLD
References
Branches

preg_replace: documentation ( source)

preferences:dark modelive preview

41.03 ms | 402 KiB | 5 Q