property_exists
(PHP 5 >= 5.1.0, PHP 7, PHP 8)
property_exists — Checks if the object or class has a property
Description
$object_or_class, string $property): bool
This function checks if the given property exists in
the specified class.
Note:
As opposed with isset(), property_exists() returns
trueeven if the property has the valuenull.
Parameters
-
object_or_class -
The class name or an object of the class to test for
-
property -
The name of the property
Return Values
Returns true if the property exists, false if it doesn't exist or
null in case of an error.
Examples
Example #1 A property_exists() example
<?php
class myClass {
public $mine;
private $xpto;
static protected $test;
static function test() {
var_dump(property_exists('myClass', 'xpto')); //true
}
}
var_dump(property_exists('myClass', 'mine')); //true
var_dump(property_exists(new myClass, 'mine')); //true
var_dump(property_exists('myClass', 'xpto')); //true
var_dump(property_exists('myClass', 'bar')); //false
var_dump(property_exists('myClass', 'test')); //true
myClass::test();
?>
Notes
Note:
Using this function will use any registered autoloaders if the class is not already known.
Note:
The property_exists() function cannot detect properties that are magically accessible using the
__getmagic method.
