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--TEST-- Test rsort() function : usage variations - numeric values --SKIPIF-- <?php if (PHP_INT_SIZE != 4) die("skip this test is for 32bit platform only"); ?> --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 numeric data to rsort() to test behaviour */ echo "*** Testing rsort() : variation ***\n"; // group of various arrays $various_arrays = array ( // negative/positive integers array array(11, -11, 21, -21, 31, -31, 0, 41, -41), // float value array array(10.5, -10.5, 10.5e2, 10.6E-2, .5, .01, -.1), // mixed value array array(.0001, .0021, -.01, -1, 0, .09, 2, -.9, 10.6E-2, -10.6E-2, 33), // array values contains minimum and maximum ranges array(2147483647, 2147483648, -2147483647, -2147483648, -0, 0, -2147483649) ); // set of possible flag values $flag_value = array("SORT_REGULAR" => SORT_REGULAR, "SORT_NUMERIC" => SORT_NUMERIC); $count = 1; // loop through to test rsort() with different arrays foreach ($various_arrays as $array) { echo "\n-- Iteration $count --\n"; echo "- With Defualt sort flag -\n"; $temp_array = $array; var_dump(rsort($temp_array) ); var_dump($temp_array); // loop through $flag_value array and setting all possible flag values foreach($flag_value 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 Defualt sort flag - bool(true) array(9) { [0]=> int(41) [1]=> int(31) [2]=> int(21) [3]=> int(11) [4]=> int(0) [5]=> int(-11) [6]=> int(-21) [7]=> int(-31) [8]=> int(-41) } - Sort flag = SORT_REGULAR - bool(true) array(9) { [0]=> int(41) [1]=> int(31) [2]=> int(21) [3]=> int(11) [4]=> int(0) [5]=> int(-11) [6]=> int(-21) [7]=> int(-31) [8]=> int(-41) } - Sort flag = SORT_NUMERIC - bool(true) array(9) { [0]=> int(41) [1]=> int(31) [2]=> int(21) [3]=> int(11) [4]=> int(0) [5]=> int(-11) [6]=> int(-21) [7]=> int(-31) [8]=> int(-41) } -- Iteration 2 -- - With Defualt sort flag - bool(true) array(7) { [0]=> float(1050) [1]=> float(10.5) [2]=> float(0.5) [3]=> float(0.106) [4]=> float(0.01) [5]=> float(-0.1) [6]=> float(-10.5) } - Sort flag = SORT_REGULAR - bool(true) array(7) { [0]=> float(1050) [1]=> float(10.5) [2]=> float(0.5) [3]=> float(0.106) [4]=> float(0.01) [5]=> float(-0.1) [6]=> float(-10.5) } - Sort flag = SORT_NUMERIC - bool(true) array(7) { [0]=> float(1050) [1]=> float(10.5) [2]=> float(0.5) [3]=> float(0.106) [4]=> float(0.01) [5]=> float(-0.1) [6]=> float(-10.5) } -- Iteration 3 -- - With Defualt sort flag - bool(true) array(11) { [0]=> int(33) [1]=> int(2) [2]=> float(0.106) [3]=> float(0.09) [4]=> float(0.0021) [5]=> float(0.0001) [6]=> int(0) [7]=> float(-0.01) [8]=> float(-0.106) [9]=> float(-0.9) [10]=> int(-1) } - Sort flag = SORT_REGULAR - bool(true) array(11) { [0]=> int(33) [1]=> int(2) [2]=> float(0.106) [3]=> float(0.09) [4]=> float(0.0021) [5]=> float(0.0001) [6]=> int(0) [7]=> float(-0.01) [8]=> float(-0.106) [9]=> float(-0.9) [10]=> int(-1) } - Sort flag = SORT_NUMERIC - bool(true) array(11) { [0]=> int(33) [1]=> int(2) [2]=> float(0.106) [3]=> float(0.09) [4]=> float(0.0021) [5]=> float(0.0001) [6]=> int(0) [7]=> float(-0.01) [8]=> float(-0.106) [9]=> float(-0.9) [10]=> int(-1) } -- Iteration 4 -- - With Defualt sort flag - bool(true) array(7) { [0]=> float(2147483648) [1]=> int(2147483647) [2]=> int(0) [3]=> int(0) [4]=> int(-2147483647) [5]=> float(-2147483648) [6]=> float(-2147483649) } - Sort flag = SORT_REGULAR - bool(true) array(7) { [0]=> float(2147483648) [1]=> int(2147483647) [2]=> int(0) [3]=> int(0) [4]=> int(-2147483647) [5]=> float(-2147483648) [6]=> float(-2147483649) } - Sort flag = SORT_NUMERIC - bool(true) array(7) { [0]=> float(2147483648) [1]=> int(2147483647) [2]=> int(0) [3]=> int(0) [4]=> int(-2147483647) [5]=> float(-2147483648) [6]=> float(-2147483649) } Done