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@ 2015-04-09T15:50:09Z

<?php

function f($̀,$́){$̂=$̀;$̃=$̀[$́];$̂[$́]=!$̃;$̄=$̃!==$̀[$́];$̀[$́]=$̃;return$̄;}

var_dump(f (1,2));

Output
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var_dump: documentation ( source)

preferences:dark modelive preview

61.79 ms | 402 KiB | 5 Q