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<?php $items = array(new \stdClass(), new \stdClass()); $copy = array(); foreach ($items as $item) { $copy[] = $item; } $diff = array_udiff($items, $iterated, function ($a, $b) { //var_dump($a, $b, $a === $b); return $a === $b; }); var_dump($diff);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $iterated in /in/YVdZm on line 11 Deprecated: array_udiff(): Returning bool from comparison function is deprecated, return an integer less than, equal to, or greater than zero in /in/YVdZm on line 11 Fatal error: Uncaught TypeError: array_udiff(): Argument #2 must be of type array, null given in /in/YVdZm:11 Stack trace: #0 /in/YVdZm(11): array_udiff(Array, NULL, Object(Closure)) #1 {main} thrown in /in/YVdZm on line 11
Process exited with code 255.

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