property_exists
(PHP 5 >= 5.1.0RC1)
property_exists --
Checks if the object or class has a property
Beschreibung
bool
property_exists ( mixed class, string property )
This function checks if the given property exists in
the specified class (and if it is accessible from the current scope).
Anmerkung:
As opposed with isset(),
property_exists() returns TRUE even if the property
has the value NULL.
Parameter Liste
- class
A string with the class name or an object of the class to test for
- property
The name of the property
Rückgabewerte
Returns TRUE if the property exists, FALSE if it doesn't exist or
NULL in case of an error.
Beispiele
Beispiel 1. A property_exists() example
<?php
class myClass {
public $mine;
private $xpto;
static function test() {
var_dump(property_exists('myClass', 'xpto')); // true, it can be accessed from here
}
}
var_dump(property_exists('myClass', 'mine')); //true
var_dump(property_exists(new myClass, 'mine')); //true
var_dump(property_exists('myClass', 'xpto')); //false, isn't public
myClass::test();
?>
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