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1.1 misho 1: --TEST-- 2: Test prev() function : usage variation - Pass different data types as $array_arg 3: --FILE-- 4: <?php 5: /* Prototype : mixed prev(array $array_arg) 6: * Description: Move array argument's internal pointer to the previous element and return it 7: * Source code: ext/standard/array.c 8: */ 9: 10: /* 11: * Pass different data types as $array_arg argument to prev() to test behaviour 12: */ 13: 14: echo "*** Testing prev() : variation ***\n"; 15: 16: //get an unset variable 17: $unset_var = 10; 18: unset ($unset_var); 19: 20: // get a class 21: class classA 22: { 23: public function __toString() { 24: return "Class A object"; 25: } 26: } 27: 28: // heredoc string 29: $heredoc = <<<EOT 30: hello world 31: EOT; 32: 33: // get a resource variable 34: $fp = fopen(__FILE__, "r"); 35: 36: // unexpected values to be passed to $array_arg argument 37: $inputs = array( 38: 39: // int data 40: /*1*/ 0, 41: 1, 42: 12345, 43: -2345, 44: 45: // float data 46: /*5*/ 10.5, 47: -10.5, 48: 12.3456789000e10, 49: 12.3456789000E-10, 50: .5, 51: 52: // null data 53: /*10*/ NULL, 54: null, 55: 56: // boolean data 57: /*12*/ true, 58: false, 59: TRUE, 60: FALSE, 61: 62: // empty data 63: /*16*/ "", 64: '', 65: array(), 66: 67: // string data 68: /*19*/ "string", 69: 'string', 70: $heredoc, 71: 72: // object data 73: /*22*/ new classA(), 74: 75: // undefined data 76: /*23*/ @$undefined_var, 77: 78: // unset data 79: /*24*/ @$unset_var, 80: 81: // resource variable 82: /*25*/ $fp 83: ); 84: 85: // loop through each element of $inputs to check the behavior of prev() 86: $iterator = 1; 87: foreach($inputs as $input) { 88: echo "\n-- Iteration $iterator --\n"; 89: var_dump( prev($input) ); 90: $iterator++; 91: }; 92: 93: fclose($fp); 94: ?> 95: ===DONE=== 96: --EXPECTF-- 97: *** Testing prev() : variation *** 98: 99: -- Iteration 1 -- 100: 101: Warning: prev() expects parameter 1 to be array, integer given in %s on line %d 102: NULL 103: 104: -- Iteration 2 -- 105: 106: Warning: prev() expects parameter 1 to be array, integer given in %s on line %d 107: NULL 108: 109: -- Iteration 3 -- 110: 111: Warning: prev() expects parameter 1 to be array, integer given in %s on line %d 112: NULL 113: 114: -- Iteration 4 -- 115: 116: Warning: prev() expects parameter 1 to be array, integer given in %s on line %d 117: NULL 118: 119: -- Iteration 5 -- 120: 121: Warning: prev() expects parameter 1 to be array, double given in %s on line %d 122: NULL 123: 124: -- Iteration 6 -- 125: 126: Warning: prev() expects parameter 1 to be array, double given in %s on line %d 127: NULL 128: 129: -- Iteration 7 -- 130: 131: Warning: prev() expects parameter 1 to be array, double given in %s on line %d 132: NULL 133: 134: -- Iteration 8 -- 135: 136: Warning: prev() expects parameter 1 to be array, double given in %s on line %d 137: NULL 138: 139: -- Iteration 9 -- 140: 141: Warning: prev() expects parameter 1 to be array, double given in %s on line %d 142: NULL 143: 144: -- Iteration 10 -- 145: 146: Warning: prev() expects parameter 1 to be array, null given in %s on line %d 147: NULL 148: 149: -- Iteration 11 -- 150: 151: Warning: prev() expects parameter 1 to be array, null given in %s on line %d 152: NULL 153: 154: -- Iteration 12 -- 155: 156: Warning: prev() expects parameter 1 to be array, boolean given in %s on line %d 157: NULL 158: 159: -- Iteration 13 -- 160: 161: Warning: prev() expects parameter 1 to be array, boolean given in %s on line %d 162: NULL 163: 164: -- Iteration 14 -- 165: 166: Warning: prev() expects parameter 1 to be array, boolean given in %s on line %d 167: NULL 168: 169: -- Iteration 15 -- 170: 171: Warning: prev() expects parameter 1 to be array, boolean given in %s on line %d 172: NULL 173: 174: -- Iteration 16 -- 175: 176: Warning: prev() expects parameter 1 to be array, string given in %s on line %d 177: NULL 178: 179: -- Iteration 17 -- 180: 181: Warning: prev() expects parameter 1 to be array, string given in %s on line %d 182: NULL 183: 184: -- Iteration 18 -- 185: bool(false) 186: 187: -- Iteration 19 -- 188: 189: Warning: prev() expects parameter 1 to be array, string given in %s on line %d 190: NULL 191: 192: -- Iteration 20 -- 193: 194: Warning: prev() expects parameter 1 to be array, string given in %s on line %d 195: NULL 196: 197: -- Iteration 21 -- 198: 199: Warning: prev() expects parameter 1 to be array, string given in %s on line %d 200: NULL 201: 202: -- Iteration 22 -- 203: bool(false) 204: 205: -- Iteration 23 -- 206: 207: Warning: prev() expects parameter 1 to be array, null given in %s on line %d 208: NULL 209: 210: -- Iteration 24 -- 211: 212: Warning: prev() expects parameter 1 to be array, null given in %s on line %d 213: NULL 214: 215: -- Iteration 25 -- 216: 217: Warning: prev() expects parameter 1 to be array, resource given in %s on line %d 218: NULL 219: ===DONE===