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|
--TEST--
Test array_key_exists() function : usage variations - Pass different data types as $key arg
--FILE--
<?php
/*
* Pass different data types as $key argument to array_key_exists() to test behaviour
*/
echo "*** Testing array_key_exists() : usage variations ***\n";
// Initialise function arguments not being substituted
$search = array ('zero', 'key' => 'val', 'two', 10 => 'value');
//get an unset variable
$unset_var = 10;
unset ($unset_var);
// get a class
class classA
{
public function __toString() {
return "key";
}
}
// heredoc string
$heredoc = <<<EOT
key
EOT;
// get a resource variable
$fp = fopen(__FILE__, "r");
// unexpected values to be passed to $key argument
$inputs = array(
// int data
/*1*/ 0,
1,
12345,
-2345,
// null data
/*10*/ NULL,
null,
// boolean data
/*12*/ true,
false,
TRUE,
FALSE,
// empty data
/*16*/ "",
'',
array(),
// string data
/*19*/ "key",
'key',
$heredoc,
// object data
/*22*/ new classA(),
// undefined data
/*23*/ @$undefined_var,
// unset data
/*24*/ @$unset_var,
// resource variable
/*25*/ $fp
);
// loop through each element of $inputs to check the behavior of array_key_exists()
$iterator = 1;
foreach($inputs as $input) {
echo "\n-- Iteration $iterator --\n";
try {
var_dump( array_key_exists($input, $search) );
} catch (TypeError $exception) {
echo $exception->getMessage() . "\n";
}
$iterator++;
};
fclose($fp);
echo "Done";
?>
--EXPECTF--
*** Testing array_key_exists() : usage variations ***
-- Iteration 1 --
bool(true)
-- Iteration 2 --
bool(true)
-- Iteration 3 --
bool(false)
-- Iteration 4 --
bool(false)
-- Iteration 5 --
bool(false)
-- Iteration 6 --
bool(false)
-- Iteration 7 --
bool(true)
-- Iteration 8 --
bool(true)
-- Iteration 9 --
bool(true)
-- Iteration 10 --
bool(true)
-- Iteration 11 --
bool(false)
-- Iteration 12 --
bool(false)
-- Iteration 13 --
Cannot access offset of type array on array
-- Iteration 14 --
bool(true)
-- Iteration 15 --
bool(true)
-- Iteration 16 --
bool(true)
-- Iteration 17 --
Cannot access offset of type classA on array
-- Iteration 18 --
bool(false)
-- Iteration 19 --
bool(false)
-- Iteration 20 --
Warning: Resource ID#%d used as offset, casting to integer (%d) in %s on line %d
bool(false)
Done
|
