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1.1 misho 1: --TEST-- 2: Test uasort() function : usage variations - different associative arrays 3: --FILE-- 4: <?php 5: /* Prototype : bool uasort(array $array_arg, string $cmp_function) 6: * Description: Sort an array with a user-defined comparison function and maintain index association 7: * Source code: ext/standard/array.c 8: */ 9: 10: /* Testing uasort() with different associative arrays having keys as 11: * string, integer, default & duplicate keys 12: */ 13: 14: echo "*** Testing uasort() : sorting different associative arrays ***\n"; 15: 16: // comparison function 17: /* Prototype : int cmp(mixed $value1, mixed $value2) 18: * Parameters : $value1 and $value2 - values to be compared 19: * Return value : 0 - if both values are same 20: * 1 - if value1 is greater than value2 21: * -1 - if value1 is less than value2 22: * Description : compares value1 and value2 23: */ 24: function cmp($value1, $value2) 25: { 26: if($value1 == $value2) { 27: return 0; 28: } 29: else if($value1 > $value2) { 30: return 1; 31: } 32: else 33: return -1; 34: } 35: 36: // Array with duplicate string and integer keys 37: $array_arg = array(0 => 2, "a" => 8, "d" => 9, 3 => 3, 5 => 2, "o" => 6, "z" => -99, 0 => 1, "z" => 3); 38: echo "-- Array with duplicate keys --\n"; 39: var_dump( uasort($array_arg, 'cmp') ); 40: var_dump($array_arg); 41: 42: // Array with default and assigned keys 43: $array_arg = array(0 => "Banana", 1 => "Mango", "Orange", 2 => "Apple", "Pineapple"); 44: echo "-- Array with default/assigned keys --\n"; 45: var_dump( uasort($array_arg, 'cmp') ); 46: var_dump($array_arg); 47: 48: echo "Done" 49: ?> 50: --EXPECTF-- 51: *** Testing uasort() : sorting different associative arrays *** 52: -- Array with duplicate keys -- 53: bool(true) 54: array(7) { 55: [0]=> 56: int(1) 57: [5]=> 58: int(2) 59: ["z"]=> 60: int(3) 61: [3]=> 62: int(3) 63: ["o"]=> 64: int(6) 65: ["a"]=> 66: int(8) 67: ["d"]=> 68: int(9) 69: } 70: -- Array with default/assigned keys -- 71: bool(true) 72: array(4) { 73: [2]=> 74: string(5) "Apple" 75: [0]=> 76: string(6) "Banana" 77: [1]=> 78: string(5) "Mango" 79: [3]=> 80: string(9) "Pineapple" 81: } 82: Done