<?php array_diff( [ ['a'=> 8, 'b' => 2, 'c' => 3], ['a'=> 2, 'b' => 2, 'c' => 3], ['a'=> 1, 'b' => 2, 'c' => 3] ], [ ['a'=> 4, 'b' => 2, 'c' => 3], ['a'=> 1, 'b' => 2, 'c' => 3], ['a'=> 3, 'b' => 2, 'c' => 3] ] );
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