<?php echo 'Hello World'; $sql = [1 => ["id" => 1, "num" => "123"], 2 => ["id" => 2, "num" => "456"]]; $mongo = ["id" => 1, "num" => "123"]; $a = array_diff_ukey ($mongo, $sql, function($item) {return $item['num'];} ); var_dump($a);
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