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<?php $r = range(1,10); array_walk($r, function(&$value, $key) { $double = $value*2; if ($double >= 12) { $value = $double; } else { unset($r[$key]); } }); var_dump($r);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $r in /in/Fs7nj on line 10 Warning: Undefined variable $r in /in/Fs7nj on line 10 Warning: Undefined variable $r in /in/Fs7nj on line 10 Warning: Undefined variable $r in /in/Fs7nj on line 10 Warning: Undefined variable $r in /in/Fs7nj on line 10 array(10) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(4) [4]=> int(5) [5]=> int(12) [6]=> int(14) [7]=> int(16) [8]=> int(18) [9]=> int(20) }

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