PHP: Checks if the object or class has a property

Description

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).

Note: As opposed with isset(), property_exists() returns TRUE even if the property has the value NULL.

Parameters

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 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();



?>

property_exists

Description

Parameters

Return Values

Examples

See Also