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<?php $items = array(new \stdClass(), new \stdClass()); $copy = array(); foreach ($items as $item) { $copy[] = $item; } $udiff = array_udiff($items, $copy, function ($a, $b) { var_dump($a, $b, $a === $b); return $a === $b; }); echo PHP_EOL . 'Array contents' . PHP_EOL; var_dump($udiff, $items, $copy);
Output for git.master, git.master_jit, rfc.property-hooks
object(stdClass)#1 (0) { } object(stdClass)#2 (0) { } bool(false) Deprecated: array_udiff(): Returning bool from comparison function is deprecated, return an integer less than, equal to, or greater than zero in /in/6Y1RQ on line 11 object(stdClass)#2 (0) { } object(stdClass)#1 (0) { } bool(false) object(stdClass)#1 (0) { } object(stdClass)#2 (0) { } bool(false) object(stdClass)#2 (0) { } object(stdClass)#1 (0) { } bool(false) object(stdClass)#1 (0) { } object(stdClass)#1 (0) { } bool(true) object(stdClass)#1 (0) { } object(stdClass)#2 (0) { } bool(false) object(stdClass)#2 (0) { } object(stdClass)#1 (0) { } bool(false) object(stdClass)#1 (0) { } object(stdClass)#2 (0) { } bool(false) object(stdClass)#2 (0) { } object(stdClass)#1 (0) { } bool(false) Array contents array(0) { } array(2) { [0]=> object(stdClass)#1 (0) { } [1]=> object(stdClass)#2 (0) { } } array(2) { [0]=> object(stdClass)#1 (0) { } [1]=> object(stdClass)#2 (0) { } }

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