property_exists

(PHP 5 >= 5.1.0, PHP 7)

property_exists Checks if the object or class has a property


Description

property_exists ( mixed $class , string $property ) : bool

This function checks if the given property exists in the specified class.

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.


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 __get magic method.

Examples

Example #1 A property_exists() example

<?phpclass myClass {    public $mine;    private $xpto;    static protected $test;    static function test() {        var_dump(property_exists('myClass', 'xpto')); //true    }}var_dump(property_exists('myClass', 'mine'));   //truevar_dump(property_exists(new myClass, 'mine')); //truevar_dump(property_exists('myClass', 'xpto'));   //true, as of PHP 5.3.0var_dump(property_exists('myClass', 'bar'));    //falsevar_dump(property_exists('myClass', 'test'));   //true, as of PHP 5.3.0myClass::test();?>

See Also