1--TEST-- 2Test exp() function : usage variations - different data types as $arg argument 3--INI-- 4precision=14 5--FILE-- 6<?php 7/* Prototype : float exp ( float $arg ) 8 * Description: Returns e raised to the power of arg. 9 * Source code: ext/standard/math.c 10 */ 11 12echo "*** Testing exp() : usage variations ***\n"; 13 14//get an unset variable 15$unset_var = 10; 16unset ($unset_var); 17 18// heredoc string 19$heredoc = <<<EOT 20abc 21xyz 22EOT; 23 24// get a class 25class classA 26{ 27} 28 29// get a resource variable 30$fp = fopen(__FILE__, "r"); 31 32// unexpected values to be passed to $arg argument 33$inputs = array( 34 // int data 35/*1*/ 0, 36 1, 37 12345, 38 -2345, 39 2147483647, 40 41 // float data 42/*6*/ 10.5, 43 -10.5, 44 12.3456789000e10, 45 12.3456789000E-10, 46 .5, 47 48 // null data 49/*11*/ NULL, 50 null, 51 52 // boolean data 53/*13*/ true, 54 false, 55 TRUE, 56 FALSE, 57 58 // empty data 59/*17*/ "", 60 '', 61 array(), 62 63 // string data 64/*20*/ "abcxyz", 65 'abcxyz', 66 $heredoc, 67 68 // object data 69/*23*/ new classA(), 70 71 // undefined data 72/*24*/ @$undefined_var, 73 74 // unset data 75/*25*/ @$unset_var, 76 77 // resource variable 78/*26*/ $fp 79); 80 81// loop through each element of $inputs to check the behaviour of exp() 82$iterator = 1; 83foreach($inputs as $input) { 84 echo "\n-- Iteration $iterator --\n"; 85 var_dump(exp($input)); 86 $iterator++; 87}; 88fclose($fp); 89?> 90===Done=== 91--EXPECTF-- 92*** Testing exp() : usage variations *** 93 94-- Iteration 1 -- 95float(1) 96 97-- Iteration 2 -- 98float(2.718281828459) 99 100-- Iteration 3 -- 101float(INF) 102 103-- Iteration 4 -- 104float(0) 105 106-- Iteration 5 -- 107float(INF) 108 109-- Iteration 6 -- 110float(36315.502674247) 111 112-- Iteration 7 -- 113float(2.7536449349747E-5) 114 115-- Iteration 8 -- 116float(INF) 117 118-- Iteration 9 -- 119float(1.0000000012346) 120 121-- Iteration 10 -- 122float(1.6487212707001) 123 124-- Iteration 11 -- 125float(1) 126 127-- Iteration 12 -- 128float(1) 129 130-- Iteration 13 -- 131float(2.718281828459) 132 133-- Iteration 14 -- 134float(1) 135 136-- Iteration 15 -- 137float(2.718281828459) 138 139-- Iteration 16 -- 140float(1) 141 142-- Iteration 17 -- 143 144Warning: exp() expects parameter 1 to be double, string given in %s on line %d 145NULL 146 147-- Iteration 18 -- 148 149Warning: exp() expects parameter 1 to be double, string given in %s on line %d 150NULL 151 152-- Iteration 19 -- 153 154Warning: exp() expects parameter 1 to be double, array given in %s on line %d 155NULL 156 157-- Iteration 20 -- 158 159Warning: exp() expects parameter 1 to be double, string given in %s on line %d 160NULL 161 162-- Iteration 21 -- 163 164Warning: exp() expects parameter 1 to be double, string given in %s on line %d 165NULL 166 167-- Iteration 22 -- 168 169Warning: exp() expects parameter 1 to be double, string given in %s on line %d 170NULL 171 172-- Iteration 23 -- 173 174Warning: exp() expects parameter 1 to be double, object given in %s on line %d 175NULL 176 177-- Iteration 24 -- 178float(1) 179 180-- Iteration 25 -- 181float(1) 182 183-- Iteration 26 -- 184 185Warning: exp() expects parameter 1 to be double, resource given in %s on line %d 186NULL 187===Done=== 188
