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<?php $itemList = array( array(new stdClass, new stdClass, new stdClass, new stdClass) ); function doCompare($a, $b) { echo 'A:'; var_dump($a); echo 'B:'; var_dump($b); var_dump($a === $b); return ($a === $b) ? 0 : 1; }; foreach ($itemList as $item) { echo 'Comparing: '; var_dump($item); var_dump(array_udiff($item, $item, 'doCompare')); echo "\n\n"; }
Output for git.master, git.master_jit, rfc.property-hooks
Comparing: array(4) { [0]=> object(stdClass)#1 (0) { } [1]=> object(stdClass)#2 (0) { } [2]=> object(stdClass)#3 (0) { } [3]=> object(stdClass)#4 (0) { } } A:object(stdClass)#1 (0) { } B:object(stdClass)#2 (0) { } bool(false) A:object(stdClass)#3 (0) { } B:object(stdClass)#2 (0) { } bool(false) A:object(stdClass)#1 (0) { } B:object(stdClass)#3 (0) { } bool(false) A:object(stdClass)#1 (0) { } B:object(stdClass)#4 (0) { } bool(false) A:object(stdClass)#3 (0) { } B:object(stdClass)#4 (0) { } bool(false) A:object(stdClass)#2 (0) { } B:object(stdClass)#4 (0) { } bool(false) A:object(stdClass)#1 (0) { } B:object(stdClass)#2 (0) { } bool(false) A:object(stdClass)#3 (0) { } B:object(stdClass)#2 (0) { } bool(false) A:object(stdClass)#1 (0) { } B:object(stdClass)#3 (0) { } bool(false) A:object(stdClass)#1 (0) { } B:object(stdClass)#4 (0) { } bool(false) A:object(stdClass)#3 (0) { } B:object(stdClass)#4 (0) { } bool(false) A:object(stdClass)#2 (0) { } B:object(stdClass)#4 (0) { } bool(false) A:object(stdClass)#4 (0) { } B:object(stdClass)#4 (0) { } bool(true) A:object(stdClass)#4 (0) { } B:object(stdClass)#2 (0) { } bool(false) A:object(stdClass)#2 (0) { } B:object(stdClass)#2 (0) { } bool(true) A:object(stdClass)#2 (0) { } B:object(stdClass)#3 (0) { } bool(false) A:object(stdClass)#3 (0) { } B:object(stdClass)#3 (0) { } bool(true) A:object(stdClass)#3 (0) { } B:object(stdClass)#1 (0) { } bool(false) A:object(stdClass)#1 (0) { } B:object(stdClass)#1 (0) { } bool(true) array(0) { }

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