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@ 2014-01-27T09:56:04Z

<?php
function foo() { echo 1; }
function bar() { echo 2; }
preg_replace('/.+/e', 'foo("$0")', '{${bar()}}');

Output
Performance
VLD
References
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preg_replace: documentation ( source)

preferences:dark modelive preview

46.45 ms | 402 KiB | 5 Q