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<?php print_r(array_diff(array(312, 401, 1599, 3), array(401) )); // returns [312, 1599, 3] print_r(array_filter(array(312, 401, 1599, 3), function($i){return $i != 401;})); print_r(array_delete( array(312, 401, 1599, 3), 401 ) );

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