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<?php $values = array(-5,2,3,-8,4,-1,0); array_walk($values, "abs"); ?> ###### Then I wrote this function : <?php function myAbs(&$val){ $val = abs($val); } array_walk($values, "myAbs");
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught ArgumentCountError: abs() expects exactly 1 argument, 2 given in /in/bAJoY:4 Stack trace: #0 [internal function]: abs(-5, 0) #1 /in/bAJoY(4): array_walk(Array, 'abs') #2 {main} thrown in /in/bAJoY on line 4
Process exited with code 255.

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