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|
--TEST--
Test is_object() function
--FILE--
<?php
/* Prototype: bool is_object ( mixed $var );
* Description: Finds whether the given variable is an object
*/
echo "*** Testing is_object() with valid objects ***\n";
// class with no members
class foo
{
// no members
}
// abstract class
abstract class abstractClass
{
abstract protected function getClassName();
public function printClassName () {
echo $this->getClassName() . "\n";
}
}
// implement abstract class
class concreteClass extends abstractClass
{
protected function getClassName() {
return "concreteClass";
}
}
// interface class
interface IValue
{
public function setVal ($name, $val);
public function dumpVal ();
}
// implement the interface
class Value implements IValue
{
private $vars = array ();
public function setVal ( $name, $val ) {
$this->vars[$name] = $val;
}
public function dumpVal () {
var_dump ( $vars );
}
}
// a gereral class
class myClass
{
var $foo_object;
public $public_var;
public $public_var1;
private $private_var;
protected $protected_var;
function __construct ( ) {
$this->foo_object = new foo();
$this->public_var = 10;
$this->public_var1 = new foo();
$this->private_var = new foo();
$this->proected_var = new foo();
}
}
// create a object of each class defined above
$myClass_object = new myClass();
$foo_object = new foo();
$Value_object = new Value();
$concreteClass_object = new concreteClass();
$valid_objects = array(
new stdclass,
new foo,
new concreteClass,
new Value,
new myClass,
$myClass_object,
$myClass_object->foo_object,
$myClass_object->public_var1,
$foo_object,
$Value_object,
$concreteClass_object
);
/* loop to check that is_object() recognizes different
objects, expected output: bool(true) */
$loop_counter = 1;
foreach ($valid_objects as $object ) {
echo "-- Iteration $loop_counter --\n"; $loop_counter++;
var_dump( is_object($object) );
}
echo "\n*** Testing is_object() on non object types ***\n";
// get a resource type variable
$fp = fopen (__FILE__, "r");
$dfp = opendir ( __DIR__ );
// unset object
$unset_object = new foo();
unset ($unset_object);
// other types in a array
$not_objects = array (
0,
-1,
0.1,
-10.0000000000000000005,
10.5e+5,
0xFF,
0123,
$fp, // resource
$dfp,
array(),
array("string"),
"0",
"1",
"",
true,
NULL,
null,
@$unset_object, // unset object
@$undefined_var, // undefined variable
);
/* loop through the $not_objects to see working of
is_object() on non object types, expected output: bool(false) */
$loop_counter = 1;
foreach ($not_objects as $type ) {
echo "-- Iteration $loop_counter --\n"; $loop_counter++;
var_dump( is_object($type) );
}
echo "Done\n";
// close the resources used
fclose($fp);
closedir($dfp);
?>
--EXPECTF--
*** Testing is_object() with valid objects ***
-- Iteration 1 --
bool(true)
-- Iteration 2 --
bool(true)
-- Iteration 3 --
bool(true)
-- Iteration 4 --
bool(true)
-- Iteration 5 --
bool(true)
-- Iteration 6 --
bool(true)
-- Iteration 7 --
bool(true)
-- Iteration 8 --
bool(true)
-- Iteration 9 --
bool(true)
-- Iteration 10 --
bool(true)
-- Iteration 11 --
bool(true)
*** Testing is_object() on non object types ***
-- Iteration 1 --
bool(false)
-- Iteration 2 --
bool(false)
-- Iteration 3 --
bool(false)
-- Iteration 4 --
bool(false)
-- Iteration 5 --
bool(false)
-- Iteration 6 --
bool(false)
-- Iteration 7 --
bool(false)
-- Iteration 8 --
bool(false)
-- Iteration 9 --
bool(false)
-- Iteration 10 --
bool(false)
-- Iteration 11 --
bool(false)
-- Iteration 12 --
bool(false)
-- Iteration 13 --
bool(false)
-- Iteration 14 --
bool(false)
-- Iteration 15 --
bool(false)
-- Iteration 16 --
bool(false)
-- Iteration 17 --
bool(false)
-- Iteration 18 --
bool(false)
-- Iteration 19 --
bool(false)
Done
|
