(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 (and if it is accessible from the current scope).
Note: 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.
Example#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();
?>