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--TEST-- Test asort() function : usage variations - sort integer/float values --FILE-- <?php /* Prototype : bool asort ( array &$array [, int $sort_flags] ) * Description: Sort an array and maintain index association Elements will be arranged from lowest to highest when this function has completed. * Source code: ext/standard/array.c */ /* * Testing asort() by providing different integer/float value arrays for $array argument with following values * 1. flag value as defualt * 2. SORT_REGULAR - compare items normally * 3. SORT_NUMERIC - compare items numerically */ echo "*** Testing asort() : usage variations ***\n"; // group of various arrays with indices $various_arrays = array( // negative/posative integer array array(1 => 11, 2 => -11, 3 => 21, 4 => -21, 5 => 31, 6 => -31, 7 => 0, 8 => 41, 10 =>-41), // float value array array(1 => 10.5, 2 => -10.5, 3 => 10.5e2, 4 => 10.6E-2, 5 => .5, 6 => .0001, 7 => -.1), // mixed value array array(1 => .0001, 2 => .0021, 3 => -.01, 4 => -1, 5 => 0, 6 => .09, 7 => 2, 8 => -.9, 9 => 10.6E-2, 10 => -10.6E-2, 11 => 33), // array values contains minimum and maximum ranges array(1 => 2147483647, 2 => 2147483648, 3 => -2147483647, 4 => -2147483648, 5 => -0, 6 => 0, 7 => -2147483649) ); // set of possible flag values $flag_value = array("SORT_REGULAR" => SORT_REGULAR, "SORT_NUMERIC" => SORT_NUMERIC); $count = 1; echo "\n-- Testing asort() by supplying various integer/float arrays --\n"; // loop through to test asort() with different arrays foreach ($various_arrays as $array) { echo "\n-- Iteration $count --\n"; echo "- With default sort_flag -\n"; $temp_array = $array; var_dump(asort($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 = $array; var_dump(asort($temp_array, $flag) ); var_dump($temp_array); } $count++; } echo "Done\n"; ?> --EXPECTF-- *** Testing asort() : usage variations *** -- Testing asort() by supplying various integer/float arrays -- -- Iteration 1 -- - With default sort_flag - bool(true) array(9) { [10]=> int(-41) [6]=> int(-31) [4]=> int(-21) [2]=> int(-11) [7]=> int(0) [1]=> int(11) [3]=> int(21) [5]=> int(31) [8]=> int(41) } - Sort_flag = SORT_REGULAR - bool(true) array(9) { [10]=> int(-41) [6]=> int(-31) [4]=> int(-21) [2]=> int(-11) [7]=> int(0) [1]=> int(11) [3]=> int(21) [5]=> int(31) [8]=> int(41) } - Sort_flag = SORT_NUMERIC - bool(true) array(9) { [10]=> int(-41) [6]=> int(-31) [4]=> int(-21) [2]=> int(-11) [7]=> int(0) [1]=> int(11) [3]=> int(21) [5]=> int(31) [8]=> int(41) } -- Iteration 2 -- - With default sort_flag - bool(true) array(7) { [2]=> float(-10.5) [7]=> float(-0.1) [6]=> float(0.0001) [4]=> float(0.106) [5]=> float(0.5) [1]=> float(10.5) [3]=> float(1050) } - Sort_flag = SORT_REGULAR - bool(true) array(7) { [2]=> float(-10.5) [7]=> float(-0.1) [6]=> float(0.0001) [4]=> float(0.106) [5]=> float(0.5) [1]=> float(10.5) [3]=> float(1050) } - Sort_flag = SORT_NUMERIC - bool(true) array(7) { [2]=> float(-10.5) [7]=> float(-0.1) [6]=> float(0.0001) [4]=> float(0.106) [5]=> float(0.5) [1]=> float(10.5) [3]=> float(1050) } -- Iteration 3 -- - With default sort_flag - bool(true) array(11) { [4]=> int(-1) [8]=> float(-0.9) [10]=> float(-0.106) [3]=> float(-0.01) [5]=> int(0) [1]=> float(0.0001) [2]=> float(0.0021) [6]=> float(0.09) [9]=> float(0.106) [7]=> int(2) [11]=> int(33) } - Sort_flag = SORT_REGULAR - bool(true) array(11) { [4]=> int(-1) [8]=> float(-0.9) [10]=> float(-0.106) [3]=> float(-0.01) [5]=> int(0) [1]=> float(0.0001) [2]=> float(0.0021) [6]=> float(0.09) [9]=> float(0.106) [7]=> int(2) [11]=> int(33) } - Sort_flag = SORT_NUMERIC - bool(true) array(11) { [4]=> int(-1) [8]=> float(-0.9) [10]=> float(-0.106) [3]=> float(-0.01) [5]=> int(0) [1]=> float(0.0001) [2]=> float(0.0021) [6]=> float(0.09) [9]=> float(0.106) [7]=> int(2) [11]=> int(33) } -- Iteration 4 -- - With default sort_flag - bool(true) array(7) { [7]=> %s(-2147483649) [4]=> %s(-2147483648) [3]=> int(-2147483647) [6]=> int(0) [5]=> int(0) [1]=> int(2147483647) [2]=> %s(2147483648) } - Sort_flag = SORT_REGULAR - bool(true) array(7) { [7]=> %s(-2147483649) [4]=> %s(-2147483648) [3]=> int(-2147483647) [6]=> int(0) [5]=> int(0) [1]=> int(2147483647) [2]=> %s(2147483648) } - Sort_flag = SORT_NUMERIC - bool(true) array(7) { [7]=> %s(-2147483649) [4]=> %s(-2147483648) [3]=> int(-2147483647) [6]=> int(0) [5]=> int(0) [1]=> int(2147483647) [2]=> %s(2147483648) } Done