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 valueNULL
.
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.
This function checks the existence of a property independent of accessibility.
Using this function will use any registered autoloaders if the class is not already known.
The property_exists() function cannot detect properties that are magically accessible using the __get magic method.
<?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(); ?>
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