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|
--TEST--
Test abs() function : usage variations - different data types as $number arg
--FILE--
<?php
/* Prototype : number abs ( mixed $number )
* Description: Returns the absolute value of number.
* Source code: ext/standard/math.c
*/
/*
* Pass different data types as $number argument to abs() to test behaviour
*/
echo "*** Testing abs() : usage variations ***\n";
//get an unset variable
$unset_var = 10;
unset ($unset_var);
// get a class
class classA
{
public function __toString() {
return "abs";
}
}
// heredoc string
$heredoc = <<<EOT
abs
EOT;
// get a resource variable
$fp = fopen(__FILE__, "r");
// unexpected values to be passed to $number argument
$inputs = array(
// null data
/*10*/ NULL,
null,
// boolean data
/*12*/ true,
false,
TRUE,
FALSE,
// empty data
/*16*/ "",
'',
array(),
// string data
/*19*/ "abs",
'abs',
$heredoc,
// object data
/*22*/ new classA(),
// undefined data
/*23*/ @$undefined_var,
// unset data
/*24*/ @$unset_var,
// resource variable
/*25*/ $fp
);
// loop through each element of $inputs to check the behavior of abs()
$iterator = 1;
foreach($inputs as $input) {
echo "\n-- Iteration $iterator --\n";
var_dump(abs($input) );
$iterator++;
};
fclose($fp);
?>
===Done===
--EXPECTF--
*** Testing abs() : usage variations ***
-- Iteration 1 --
int(0)
-- Iteration 2 --
int(0)
-- Iteration 3 --
int(1)
-- Iteration 4 --
int(0)
-- Iteration 5 --
int(1)
-- Iteration 6 --
int(0)
-- Iteration 7 --
int(0)
-- Iteration 8 --
int(0)
-- Iteration 9 --
bool(false)
-- Iteration 10 --
int(0)
-- Iteration 11 --
int(0)
-- Iteration 12 --
int(0)
-- Iteration 13 --
Notice: Object of class classA could not be converted to int in %s on line %d
int(1)
-- Iteration 14 --
int(0)
-- Iteration 15 --
int(0)
-- Iteration 16 --
int(%d)
===Done===
|
