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<?php $arr1 = array(5, 3, 9, 11, 6, 15); $arr2 = array(11, 20, 1, 3, 8); foreach($arr1 as $a) { $max = max(array_filter($arr2, function ($x) { return $x < $a; })); echo $max; }
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $a in /in/p8i51 on line 7 Warning: Undefined variable $a in /in/p8i51 on line 7 Warning: Undefined variable $a in /in/p8i51 on line 7 Warning: Undefined variable $a in /in/p8i51 on line 7 Warning: Undefined variable $a in /in/p8i51 on line 7 Fatal error: Uncaught ValueError: max(): Argument #1 ($value) must contain at least one element in /in/p8i51:7 Stack trace: #0 /in/p8i51(7): max(Array) #1 {main} thrown in /in/p8i51 on line 7
Process exited with code 255.

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