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1.1 misho 1: --TEST-- 2: Test array_key_exists() function : usage variations - Pass different data types as $key arg 3: --FILE-- 4: <?php 5: /* Prototype : bool array_key_exists(mixed $key, array $search) 6: * Description: Checks if the given key or index exists in the array 7: * Source code: ext/standard/array.c 8: * Alias to functions: key_exists 9: */ 10: 11: /* 12: * Pass different data types as $key argument to array_key_exists() to test behaviour 13: */ 14: 15: echo "*** Testing array_key_exists() : usage variations ***\n"; 16: 17: // Initialise function arguments not being substituted 18: $search = array ('zero', 'key' => 'val', 'two'); 19: 20: //get an unset variable 21: $unset_var = 10; 22: unset ($unset_var); 23: 24: // get a class 25: class classA 26: { 27: public function __toString() { 28: return "key"; 29: } 30: } 31: 32: // heredoc string 33: $heredoc = <<<EOT 34: key 35: EOT; 36: 37: // get a resource variable 38: $fp = fopen(__FILE__, "r"); 39: 40: // unexpected values to be passed to $key argument 41: $inputs = array( 42: 43: // int data 44: /*1*/ 0, 45: 1, 46: 12345, 47: -2345, 48: 49: // float data 50: /*5*/ 10.5, 51: -10.5, 52: 12.3456789000e10, 53: 12.3456789000E-10, 54: .5, 55: 56: // null data 57: /*10*/ NULL, 58: null, 59: 60: // boolean data 61: /*12*/ true, 62: false, 63: TRUE, 64: FALSE, 65: 66: // empty data 67: /*16*/ "", 68: '', 69: array(), 70: 71: // string data 72: /*19*/ "key", 73: 'key', 74: $heredoc, 75: 76: // object data 77: /*22*/ new classA(), 78: 79: // undefined data 80: /*23*/ @$undefined_var, 81: 82: // unset data 83: /*24*/ @$unset_var, 84: 85: // resource variable 86: /*25*/ $fp 87: ); 88: 89: // loop through each element of $inputs to check the behavior of array_key_exists() 90: $iterator = 1; 91: foreach($inputs as $input) { 92: echo "\n-- Iteration $iterator --\n"; 93: var_dump( array_key_exists($input, $search) ); 94: $iterator++; 95: }; 96: 97: fclose($fp); 98: 99: echo "Done"; 100: ?> 101: 102: --EXPECTF-- 103: *** Testing array_key_exists() : usage variations *** 104: 105: -- Iteration 1 -- 106: bool(true) 107: 108: -- Iteration 2 -- 109: bool(true) 110: 111: -- Iteration 3 -- 112: bool(false) 113: 114: -- Iteration 4 -- 115: bool(false) 116: 117: -- Iteration 5 -- 118: 119: Warning: array_key_exists(): The first argument should be either a string or an integer in %s on line %d 120: bool(false) 121: 122: -- Iteration 6 -- 123: 124: Warning: array_key_exists(): The first argument should be either a string or an integer in %s on line %d 125: bool(false) 126: 127: -- Iteration 7 -- 128: 129: Warning: array_key_exists(): The first argument should be either a string or an integer in %s on line %d 130: bool(false) 131: 132: -- Iteration 8 -- 133: 134: Warning: array_key_exists(): The first argument should be either a string or an integer in %s on line %d 135: bool(false) 136: 137: -- Iteration 9 -- 138: 139: Warning: array_key_exists(): The first argument should be either a string or an integer in %s on line %d 140: bool(false) 141: 142: -- Iteration 10 -- 143: bool(false) 144: 145: -- Iteration 11 -- 146: bool(false) 147: 148: -- Iteration 12 -- 149: 150: Warning: array_key_exists(): The first argument should be either a string or an integer in %s on line %d 151: bool(false) 152: 153: -- Iteration 13 -- 154: 155: Warning: array_key_exists(): The first argument should be either a string or an integer in %s on line %d 156: bool(false) 157: 158: -- Iteration 14 -- 159: 160: Warning: array_key_exists(): The first argument should be either a string or an integer in %s on line %d 161: bool(false) 162: 163: -- Iteration 15 -- 164: 165: Warning: array_key_exists(): The first argument should be either a string or an integer in %s on line %d 166: bool(false) 167: 168: -- Iteration 16 -- 169: bool(false) 170: 171: -- Iteration 17 -- 172: bool(false) 173: 174: -- Iteration 18 -- 175: 176: Warning: array_key_exists(): The first argument should be either a string or an integer in %s on line %d 177: bool(false) 178: 179: -- Iteration 19 -- 180: bool(true) 181: 182: -- Iteration 20 -- 183: bool(true) 184: 185: -- Iteration 21 -- 186: bool(true) 187: 188: -- Iteration 22 -- 189: 190: Warning: array_key_exists(): The first argument should be either a string or an integer in %s on line %d 191: bool(false) 192: 193: -- Iteration 23 -- 194: bool(false) 195: 196: -- Iteration 24 -- 197: bool(false) 198: 199: -- Iteration 25 -- 200: 201: Warning: array_key_exists(): The first argument should be either a string or an integer in %s on line %d 202: bool(false) 203: Done