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--TEST-- Test rsort() function : usage variations - String values --SKIPIF-- <?php if (substr(PHP_OS, 0, 3) == 'WIN') { die("skip Output tested contains chars that are not shown the same on windows concole (ESC and co)"); } --FILE-- <?php /* Prototype : bool rsort(array &$array_arg [, int $sort_flags]) * Description: Sort an array in reverse order * Source code: ext/standard/array.c */ /* * Pass arrays containing different string data to rsort() to test behaviour */ echo "*** Testing rsort() : variation ***\n"; $various_arrays = array ( // group of escape sequences array(null, NULL, "\a", "\cx", "\e", "\f", "\n", "\t", "\xhh", "\ddd", "\v"), // array contains combination of capital/small letters array("lemoN", "Orange", "banana", "apple", "Test", "TTTT", "ttt", "ww", "x", "X", "oraNGe", "BANANA") ); $flags = array("SORT_REGULAR" => SORT_REGULAR, "SORT_STRING" => SORT_STRING); $count = 1; // loop through to test rsort() with different arrays foreach ($various_arrays as $array) { echo "\n-- Iteration $count --\n"; echo "- With Default sort flag -\n"; $temp_array = $array; var_dump(rsort($temp_array) ); var_dump($temp_array); // loop through $flags array and setting all possible flag values foreach($flags as $key => $flag){ echo "- Sort flag = $key -\n"; $temp_array = $array; var_dump(rsort($temp_array, $flag) ); var_dump($temp_array); } $count++; } echo "Done"; ?> --EXPECTF-- *** Testing rsort() : variation *** -- Iteration 1 -- - With Default sort flag - bool(true) array(11) { [0]=> string(4) "\xhh" [1]=> string(4) "\ddd" [2]=> string(3) "\cx" [3]=> string(2) "\a" [4]=> string(1) "" [5]=> string(1) "" [6]=> string(1) "" [7]=> string(1) " " [8]=> string(1) " " [9]=> NULL [10]=> NULL } - Sort flag = SORT_REGULAR - bool(true) array(11) { [0]=> string(4) "\xhh" [1]=> string(4) "\ddd" [2]=> string(3) "\cx" [3]=> string(2) "\a" [4]=> string(1) "" [5]=> string(1) "" [6]=> string(1) "" [7]=> string(1) " " [8]=> string(1) " " [9]=> NULL [10]=> NULL } - Sort flag = SORT_STRING - bool(true) array(11) { [0]=> string(4) "\xhh" [1]=> string(4) "\ddd" [2]=> string(3) "\cx" [3]=> string(2) "\a" [4]=> string(1) "" [5]=> string(1) "" [6]=> string(1) "" [7]=> string(1) " " [8]=> string(1) " " [9]=> NULL [10]=> NULL } -- Iteration 2 -- - With Default sort flag - bool(true) array(12) { [0]=> string(1) "x" [1]=> string(2) "ww" [2]=> string(3) "ttt" [3]=> string(6) "oraNGe" [4]=> string(5) "lemoN" [5]=> string(6) "banana" [6]=> string(5) "apple" [7]=> string(1) "X" [8]=> string(4) "Test" [9]=> string(4) "TTTT" [10]=> string(6) "Orange" [11]=> string(6) "BANANA" } - Sort flag = SORT_REGULAR - bool(true) array(12) { [0]=> string(1) "x" [1]=> string(2) "ww" [2]=> string(3) "ttt" [3]=> string(6) "oraNGe" [4]=> string(5) "lemoN" [5]=> string(6) "banana" [6]=> string(5) "apple" [7]=> string(1) "X" [8]=> string(4) "Test" [9]=> string(4) "TTTT" [10]=> string(6) "Orange" [11]=> string(6) "BANANA" } - Sort flag = SORT_STRING - bool(true) array(12) { [0]=> string(1) "x" [1]=> string(2) "ww" [2]=> string(3) "ttt" [3]=> string(6) "oraNGe" [4]=> string(5) "lemoN" [5]=> string(6) "banana" [6]=> string(5) "apple" [7]=> string(1) "X" [8]=> string(4) "Test" [9]=> string(4) "TTTT" [10]=> string(6) "Orange" [11]=> string(6) "BANANA" } Done