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<?php $array1 = [ 'one' => 1, 'two' => 2 ]; $array2 = [ 'one' => 2, 'two' => 2, 'three' => 3 ]; var_dump( array_diff_assoc( $array1, $array2 ) );

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50.97 ms | 402 KiB | 5 Q