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

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