--TEST-- Test array_unique() function : usage variations - two dimensional arrays --FILE-- "hello", "str2" => 'world'), array(1 => "one", 2 => "two", "one", 'two'), array(1, 2, 3, 1) ); var_dump( array_unique($input, SORT_STRING) ); echo "Done"; ?> --EXPECTF-- *** Testing array_unique() : two dimensional array for $input argument *** Notice: Array to string conversion in %sarray_unique_variation8.php on line %d Notice: Array to string conversion in %sarray_unique_variation8.php on line %d Notice: Array to string conversion in %sarray_unique_variation8.php on line %d Notice: Array to string conversion in %sarray_unique_variation8.php on line %d Notice: Array to string conversion in %sarray_unique_variation8.php on line %d Notice: Array to string conversion in %sarray_unique_variation8.php on line %d Notice: Array to string conversion in %sarray_unique_variation8.php on line %d Notice: Array to string conversion in %sarray_unique_variation8.php on line %d Notice: Array to string conversion in %sarray_unique_variation8.php on line %d Notice: Array to string conversion in %sarray_unique_variation8.php on line %d Notice: Array to string conversion in %sarray_unique_variation8.php on line %d Notice: Array to string conversion in %sarray_unique_variation8.php on line %d Notice: Array to string conversion in %sarray_unique_variation8.php on line %d Notice: Array to string conversion in %sarray_unique_variation8.php on line %d array(1) { [0]=> array(4) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(1) } } Done