--TEST-- Test ksort() function : basic functionality --FILE-- <?php /* Prototype : bool ksort ( array &$array [, int $sort_flags] ) * Description: Sort an array by key, maintaining key to data correlation * Source code: ext/standard/array.c */ /* * Testing ksort() by providing array of integer/string values to check the basic functionality with following flag values : * 1.flag value as defualt * 2.SORT_REGULAR - compare items normally * 3.SORT_NUMERIC - compare items numerically * 4.SORT_STRING - compare items as strings */ echo "*** Testing ksort() : basic functionality ***\n"; // an array containing unsorted string values with indices $unsorted_strings = array( "lemon" => "l", "orange" => "o", "banana" => "b" ); // an array containing unsorted numeric values with indices $unsorted_numerics = array( 100 => 4, 33 => 3, 555 => 2, 22 => 1 ); echo "\n-- Testing ksort() by supplying string array, 'flag' value is defualt --\n"; $temp_array = $unsorted_strings; var_dump( ksort($temp_array) ); // expecting : bool(true) var_dump( $temp_array); echo "\n-- Testing ksort() by supplying numeric array, 'flag' value is defualt --\n"; $temp_array = $unsorted_numerics; var_dump( ksort($temp_array) ); // expecting : bool(true) var_dump( $temp_array); echo "\n-- Testing ksort() by supplying string array, 'flag' = SORT_REGULAR --\n"; $temp_array = $unsorted_strings; var_dump( ksort($temp_array, SORT_REGULAR) ); // expecting : bool(true) var_dump( $temp_array); echo "\n-- Testing ksort() by supplying numeric array, 'flag' = SORT_REGULAR --\n"; $temp_array = $unsorted_numerics; var_dump( ksort($temp_array, SORT_REGULAR) ); // expecting : bool(true) var_dump( $temp_array); echo "\n-- Testing ksort() by supplying string array, 'flag' = SORT_STRING --\n"; $temp_array = $unsorted_strings; var_dump( ksort($temp_array, SORT_STRING) ); // expecting : bool(true) var_dump( $temp_array); echo "\n-- Testing ksort() by supplying numeric array, 'flag' = SORT_NUMERIC --\n"; $temp_array = $unsorted_numerics; var_dump( ksort($temp_array, SORT_NUMERIC) ); // expecting : bool(true) var_dump( $temp_array); echo "Done\n"; ?> --EXPECTF-- *** Testing ksort() : basic functionality *** -- Testing ksort() by supplying string array, 'flag' value is defualt -- bool(true) array(3) { ["banana"]=> string(1) "b" ["lemon"]=> string(1) "l" ["orange"]=> string(1) "o" } -- Testing ksort() by supplying numeric array, 'flag' value is defualt -- bool(true) array(4) { [22]=> int(1) [33]=> int(3) [100]=> int(4) [555]=> int(2) } -- Testing ksort() by supplying string array, 'flag' = SORT_REGULAR -- bool(true) array(3) { ["banana"]=> string(1) "b" ["lemon"]=> string(1) "l" ["orange"]=> string(1) "o" } -- Testing ksort() by supplying numeric array, 'flag' = SORT_REGULAR -- bool(true) array(4) { [22]=> int(1) [33]=> int(3) [100]=> int(4) [555]=> int(2) } -- Testing ksort() by supplying string array, 'flag' = SORT_STRING -- bool(true) array(3) { ["banana"]=> string(1) "b" ["lemon"]=> string(1) "l" ["orange"]=> string(1) "o" } -- Testing ksort() by supplying numeric array, 'flag' = SORT_NUMERIC -- bool(true) array(4) { [22]=> int(1) [33]=> int(3) [100]=> int(4) [555]=> int(2) } Done