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|
--TEST--
Test exp() function : usage variations - different data types as $arg argument
--INI--
precision=14
--FILE--
<?php
/* Prototype : float exp ( float $arg )
* Description: Returns e raised to the power of arg.
* Source code: ext/standard/math.c
*/
echo "*** Testing exp() : usage variations ***\n";
//get an unset variable
$unset_var = 10;
unset ($unset_var);
// heredoc string
$heredoc = <<<EOT
abc
xyz
EOT;
// get a class
class classA
{
}
// get a resource variable
$fp = fopen(__FILE__, "r");
// unexpected values to be passed to $arg argument
$inputs = array(
// int data
/*1*/ 0,
1,
12345,
-2345,
2147483647,
// float data
/*6*/ 10.5,
-10.5,
12.3456789000e10,
12.3456789000E-10,
.5,
// null data
/*11*/ NULL,
null,
// boolean data
/*13*/ true,
false,
TRUE,
FALSE,
// empty data
/*17*/ "",
'',
array(),
// string data
/*20*/ "abcxyz",
'abcxyz',
$heredoc,
// object data
/*23*/ new classA(),
// undefined data
/*24*/ @$undefined_var,
// unset data
/*25*/ @$unset_var,
// resource variable
/*26*/ $fp
);
// loop through each element of $inputs to check the behaviour of exp()
$iterator = 1;
foreach($inputs as $input) {
echo "\n-- Iteration $iterator --\n";
var_dump(exp($input));
$iterator++;
};
fclose($fp);
?>
===Done===
--EXPECTF--
*** Testing exp() : usage variations ***
-- Iteration 1 --
float(1)
-- Iteration 2 --
float(2.718281828459)
-- Iteration 3 --
float(INF)
-- Iteration 4 --
float(0)
-- Iteration 5 --
float(INF)
-- Iteration 6 --
float(36315.502674247)
-- Iteration 7 --
float(2.7536449349747E-5)
-- Iteration 8 --
float(INF)
-- Iteration 9 --
float(1.0000000012346)
-- Iteration 10 --
float(1.6487212707001)
-- Iteration 11 --
float(1)
-- Iteration 12 --
float(1)
-- Iteration 13 --
float(2.718281828459)
-- Iteration 14 --
float(1)
-- Iteration 15 --
float(2.718281828459)
-- Iteration 16 --
float(1)
-- Iteration 17 --
Warning: exp() expects parameter 1 to be float, string given in %s on line %d
NULL
-- Iteration 18 --
Warning: exp() expects parameter 1 to be float, string given in %s on line %d
NULL
-- Iteration 19 --
Warning: exp() expects parameter 1 to be float, array given in %s on line %d
NULL
-- Iteration 20 --
Warning: exp() expects parameter 1 to be float, string given in %s on line %d
NULL
-- Iteration 21 --
Warning: exp() expects parameter 1 to be float, string given in %s on line %d
NULL
-- Iteration 22 --
Warning: exp() expects parameter 1 to be float, string given in %s on line %d
NULL
-- Iteration 23 --
Warning: exp() expects parameter 1 to be float, object given in %s on line %d
NULL
-- Iteration 24 --
float(1)
-- Iteration 25 --
float(1)
-- Iteration 26 --
Warning: exp() expects parameter 1 to be float, resource given in %s on line %d
NULL
===Done===
|
