(PHP 5 >= 5.1.0)
property_exists — Checks if the object or class has a property
This function checks if the given property exists in the specified class.
Hinweis: As opposed with isset(), property_exists() returns TRUE even if the property has the value NULL.
The class name or an object of the class to test for
The name of the property
Returns TRUE if the property exists, FALSE if it doesn't exist or NULL in case of an error.
| Version | Beschreibung |
|---|---|
| 5.3.0 | This function checks the existence of a property independent of accessibility. |
Beispiel #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, as of PHP 5.3.0
var_dump(property_exists('myClass', 'bar')); //false
var_dump(property_exists('myClass', 'test')); //true, as of PHP 5.3.0
myClass::test();
?>