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1.1 misho 1: --TEST-- 2: Test usort() function : usage variations - Pass different data types as $cmp_function arg 3: --FILE-- 4: <?php 5: /* Prototype : bool usort(array $array_arg, string $cmp_function) 6: * Description: Sort an array by values using a user-defined comparison function 7: * Source code: ext/standard/array.c 8: */ 9: 10: /* 11: * Pass different data types as $cmp_function argument to usort() to test behaviour 12: */ 13: 14: echo "*** Testing usort() : usage variation ***\n"; 15: 16: // Class definition for object variable 17: class MyClass 18: { 19: public function __toString() 20: { 21: return 'object'; 22: } 23: } 24: 25: $array_arg = array(0 => 1, 1 => -1, 2 => 3, 3 => 10, 4 => 4, 5 => 2, 6 => 8, 7 => 5); 26: 27: // Get an unset variable 28: $unset_var = 10; 29: unset ($unset_var); 30: 31: // Get resource variable 32: $fp = fopen(__FILE__,'r'); 33: 34: // different values for $cmp_function 35: $inputs = array( 36: 37: // int data 38: /*1*/ 0, 39: 1, 40: 12345, 41: -2345, 42: 43: // float data 44: /*5*/ 10.5, 45: -10.5, 46: 10.1234567e8, 47: 10.7654321E-8, 48: .5, 49: 50: // array data 51: /*10*/ array(), 52: array(0), 53: array(1), 54: array(1, 2), 55: array('color' => 'red', 'item' => 'pen'), 56: 57: // null data 58: /*15*/ NULL, 59: null, 60: 61: // boolean data 62: /*17*/ true, 63: false, 64: TRUE, 65: FALSE, 66: 67: // empty data 68: /*21*/ "", 69: '', 70: 71: // string data 72: "string", 73: 'string', 74: 75: // object data 76: /*25*/ new MyClass(), 77: 78: // resource data 79: $fp, 80: 81: // undefined data 82: @$undefined_var, 83: 84: // unset data 85: /*28*/ @$unset_var, 86: ); 87: 88: // loop through each element of $inputs to check the behavior of usort() 89: $iterator = 1; 90: foreach($inputs as $input) { 91: echo "\n-- Iteration $iterator --\n"; 92: var_dump( usort($array_arg, $input) ); 93: $iterator++; 94: }; 95: 96: //closing resource 97: fclose($fp); 98: ?> 99: ===DONE=== 100: --EXPECTF-- 101: *** Testing usort() : usage variation *** 102: 103: -- Iteration 1 -- 104: 105: Warning: usort() expects parameter 2 to be a valid callback, no array or string given in %s on line %d 106: NULL 107: 108: -- Iteration 2 -- 109: 110: Warning: usort() expects parameter 2 to be a valid callback, no array or string given in %s on line %d 111: NULL 112: 113: -- Iteration 3 -- 114: 115: Warning: usort() expects parameter 2 to be a valid callback, no array or string given in %s on line %d 116: NULL 117: 118: -- Iteration 4 -- 119: 120: Warning: usort() expects parameter 2 to be a valid callback, no array or string given in %s on line %d 121: NULL 122: 123: -- Iteration 5 -- 124: 125: Warning: usort() expects parameter 2 to be a valid callback, no array or string given in %s on line %d 126: NULL 127: 128: -- Iteration 6 -- 129: 130: Warning: usort() expects parameter 2 to be a valid callback, no array or string given in %s on line %d 131: NULL 132: 133: -- Iteration 7 -- 134: 135: Warning: usort() expects parameter 2 to be a valid callback, no array or string given in %s on line %d 136: NULL 137: 138: -- Iteration 8 -- 139: 140: Warning: usort() expects parameter 2 to be a valid callback, no array or string given in %s on line %d 141: NULL 142: 143: -- Iteration 9 -- 144: 145: Warning: usort() expects parameter 2 to be a valid callback, no array or string given in %s on line %d 146: NULL 147: 148: -- Iteration 10 -- 149: 150: Warning: usort() expects parameter 2 to be a valid callback, array must have exactly two members in %s on line %d 151: NULL 152: 153: -- Iteration 11 -- 154: 155: Warning: usort() expects parameter 2 to be a valid callback, array must have exactly two members in %s on line %d 156: NULL 157: 158: -- Iteration 12 -- 159: 160: Warning: usort() expects parameter 2 to be a valid callback, array must have exactly two members in %s on line %d 161: NULL 162: 163: -- Iteration 13 -- 164: 165: Warning: usort() expects parameter 2 to be a valid callback, first array member is not a valid class name or object in %s on line %d 166: NULL 167: 168: -- Iteration 14 -- 169: 170: Warning: usort() expects parameter 2 to be a valid callback, first array member is not a valid class name or object in %s on line %d 171: NULL 172: 173: -- Iteration 15 -- 174: 175: Warning: usort() expects parameter 2 to be a valid callback, no array or string given in %s on line %d 176: NULL 177: 178: -- Iteration 16 -- 179: 180: Warning: usort() expects parameter 2 to be a valid callback, no array or string given in %s on line %d 181: NULL 182: 183: -- Iteration 17 -- 184: 185: Warning: usort() expects parameter 2 to be a valid callback, no array or string given in %s on line %d 186: NULL 187: 188: -- Iteration 18 -- 189: 190: Warning: usort() expects parameter 2 to be a valid callback, no array or string given in %s on line %d 191: NULL 192: 193: -- Iteration 19 -- 194: 195: Warning: usort() expects parameter 2 to be a valid callback, no array or string given in %s on line %d 196: NULL 197: 198: -- Iteration 20 -- 199: 200: Warning: usort() expects parameter 2 to be a valid callback, no array or string given in %s on line %d 201: NULL 202: 203: -- Iteration 21 -- 204: 205: Warning: usort() expects parameter 2 to be a valid callback, function '' not found or invalid function name in %s on line %d 206: NULL 207: 208: -- Iteration 22 -- 209: 210: Warning: usort() expects parameter 2 to be a valid callback, function '' not found or invalid function name in %s on line %d 211: NULL 212: 213: -- Iteration 23 -- 214: 215: Warning: usort() expects parameter 2 to be a valid callback, function 'string' not found or invalid function name in %s on line %d 216: NULL 217: 218: -- Iteration 24 -- 219: 220: Warning: usort() expects parameter 2 to be a valid callback, function 'string' not found or invalid function name in %s on line %d 221: NULL 222: 223: -- Iteration 25 -- 224: 225: Warning: usort() expects parameter 2 to be a valid callback, no array or string given in %s on line %d 226: NULL 227: 228: -- Iteration 26 -- 229: 230: Warning: usort() expects parameter 2 to be a valid callback, no array or string given in %s on line %d 231: NULL 232: 233: -- Iteration 27 -- 234: 235: Warning: usort() expects parameter 2 to be a valid callback, no array or string given in %s on line %d 236: NULL 237: 238: -- Iteration 28 -- 239: 240: Warning: usort() expects parameter 2 to be a valid callback, no array or string given in %s on line %d 241: NULL 242: ===DONE===