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run code in 200+ php & hhvm versions
Bugs & Features
<?php $values = array(-5,2,3,-8,4,-1,0); array_walk($values, "abs"); function myAbs(&$val){ $val = abs($val); } array_walk($values, "myAbs");
based on qto2V

Shows result from various feature-branches currently under review from the php developers. Contact me to have additional branches featured.

Output for Typed properties v2
Warning: abs() expects exactly 1 parameter, 2 given in /in/5rujV on line 4 Warning: abs() expects exactly 1 parameter, 2 given in /in/5rujV on line 4 Warning: abs() expects exactly 1 parameter, 2 given in /in/5rujV on line 4 Warning: abs() expects exactly 1 parameter, 2 given in /in/5rujV on line 4 Warning: abs() expects exactly 1 parameter, 2 given in /in/5rujV on line 4 Warning: abs() expects exactly 1 parameter, 2 given in /in/5rujV on line 4 Warning: abs() expects exactly 1 parameter, 2 given in /in/5rujV on line 4
Output for Array change keys
Warning: abs() expects exactly 1 parameter, 2 given in /in/5rujV on line 4 Warning: abs() expects exactly 1 parameter, 2 given in /in/5rujV on line 4 Warning: abs() expects exactly 1 parameter, 2 given in /in/5rujV on line 4 Warning: abs() expects exactly 1 parameter, 2 given in /in/5rujV on line 4 Warning: abs() expects exactly 1 parameter, 2 given in /in/5rujV on line 4 Warning: abs() expects exactly 1 parameter, 2 given in /in/5rujV on line 4 Warning: abs() expects exactly 1 parameter, 2 given in /in/5rujV on line 4
Output for Lexical anon
Warning: abs() expects exactly 1 parameter, 2 given in /in/5rujV on line 4 Warning: abs() expects exactly 1 parameter, 2 given in /in/5rujV on line 4 Warning: abs() expects exactly 1 parameter, 2 given in /in/5rujV on line 4 Warning: abs() expects exactly 1 parameter, 2 given in /in/5rujV on line 4 Warning: abs() expects exactly 1 parameter, 2 given in /in/5rujV on line 4 Warning: abs() expects exactly 1 parameter, 2 given in /in/5rujV on line 4 Warning: abs() expects exactly 1 parameter, 2 given in /in/5rujV on line 4

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page