<?php $data=['a'=>['b'=>['c'=>33,'d'=>44]]]; print_r($data); function &get_link(&$d) { return $d['a']['b']['c']; } $link =& get_link($data); $link = 66; print_r($data);
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Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).