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<?php $a1 = [ ['target_id' => 124], ['target_id' => 234], ['target_id' => 345], ]; $a2 = [ ['target_id' => 123, 'type' => 'node'], ['target_id' => 234, 'type' => 'node'], ['target_id' => 345, 'type' => 'node'], ]; var_dump(array_udiff($a1, $a2, function ($a, $b) { var_dump($a, $b); return 0; }));
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { ["target_id"]=> int(124) } array(1) { ["target_id"]=> int(234) } array(1) { ["target_id"]=> int(234) } array(1) { ["target_id"]=> int(345) } array(2) { ["target_id"]=> int(123) ["type"]=> string(4) "node" } array(2) { ["target_id"]=> int(234) ["type"]=> string(4) "node" } array(2) { ["target_id"]=> int(234) ["type"]=> string(4) "node" } array(2) { ["target_id"]=> int(345) ["type"]=> string(4) "node" } array(1) { ["target_id"]=> int(124) } array(2) { ["target_id"]=> int(123) ["type"]=> string(4) "node" } array(1) { ["target_id"]=> int(124) } array(1) { ["target_id"]=> int(234) } array(1) { ["target_id"]=> int(234) } array(1) { ["target_id"]=> int(345) } array(0) { }

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