<?php $a = array("a" => "green", "b" => "brown", "c" => "blue", "red"); $b = array("a" => "green", "yellow", "red"); $c = array("c" => "blue"); print_r(array_diff_ukey($a, $b, $c, function($x, $y){ if ($x == $y) { return 0; } return $x > $y ? 1 : -1; }));
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