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<?php $arr1 = array(5, 3, 9, 11, 6, 15); $arr2 = array(11, 20, 1, 3, 8); foreach($arr1 as $a) { $func = function ($x, $y) { return $x < $y; }; $max = max(array_filter($arr2, $func($x, $a))); echo $max; }
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $x in /in/OihkU on line 8 Fatal error: Uncaught TypeError: array_filter(): Argument #2 ($callback) must be a valid callback or null, no array or string given in /in/OihkU:8 Stack trace: #0 /in/OihkU(8): array_filter(Array, true) #1 {main} thrown in /in/OihkU on line 8
Process exited with code 255.

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