1--TEST-- 2Test sort() function : usage variations - sort reference values 3--FILE-- 4<?php 5/* Prototype : bool sort ( array &$array [, int $sort_flags] ) 6 * Description: This function sorts an array. 7 Elements will be arranged from lowest to highest when this function has completed. 8 * Source code: ext/standard/array.c 9*/ 10 11/* 12 * Testing sort() by providing reference variable array with following flag values 13 * flag value as defualt 14 * SORT_REGULAR - compare items normally 15 * SORT_NUMERIC - compare items numerically 16*/ 17 18echo "*** Testing sort() :usage variations ***\n"; 19 20$value1 = 100; 21$value2 = 33; 22$value3 = 555; 23 24// an array containing integer references 25$unsorted_numerics = array( &$value1 , &$value2, &$value3); 26 27echo "\n-- Testing sort() by supplying reference variable array, 'flag' value is defualt --\n"; 28$temp_array = $unsorted_numerics; 29var_dump( sort($temp_array) ); // expecting : bool(true) 30var_dump( $temp_array); 31 32echo "\n-- Testing sort() by supplying reference variable array, 'flag' = SORT_REGULAR --\n"; 33$temp_array = &$unsorted_numerics; 34var_dump( sort($temp_array, SORT_REGULAR) ); // expecting : bool(true) 35var_dump( $temp_array); 36 37echo "\n-- Testing sort() by supplying reference variable array, 'flag' = SORT_NUMERIC --\n"; 38$temp_array = &$unsorted_numerics; 39var_dump( sort($temp_array, SORT_NUMERIC) ); // expecting : bool(true) 40var_dump( $temp_array); 41 42echo "Done\n"; 43?> 44--EXPECTF-- 45*** Testing sort() :usage variations *** 46 47-- Testing sort() by supplying reference variable array, 'flag' value is defualt -- 48bool(true) 49array(3) { 50 [0]=> 51 &int(33) 52 [1]=> 53 &int(100) 54 [2]=> 55 &int(555) 56} 57 58-- Testing sort() by supplying reference variable array, 'flag' = SORT_REGULAR -- 59bool(true) 60array(3) { 61 [0]=> 62 &int(33) 63 [1]=> 64 &int(100) 65 [2]=> 66 &int(555) 67} 68 69-- Testing sort() by supplying reference variable array, 'flag' = SORT_NUMERIC -- 70bool(true) 71array(3) { 72 [0]=> 73 &int(33) 74 [1]=> 75 &int(100) 76 [2]=> 77 &int(555) 78} 79Done 80