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<?php $array1 = [ ['ITEM' => 1], ['ITEM' => 2], ['ITEM' => 3], ]; $array2 = [ ['ITEM' => 2], ['ITEM' => 3], ['ITEM' => 1], ['ITEM' => 4], ]; var_export( array_udiff( $array2, $array1, fn($a, $b) => $a <=> $b ) );
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array ( 3 => array ( 'ITEM' => 4, ), )
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