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property_exists (no version information, might be only in CVS) property_exists --
Checks if the object or class has a property
说明bool property_exists ( mixed class, string property )
This function checks if the given property exists in
the specified class (and if it was declared as public).
注:
As opposed with isset(),
property_exists() returns TRUE even if the property
has the value NULL.
参数
- class
A string with the class name or an object of the class to test for
- property
The name of the property
返回值
Returns TRUE if the property exists or FALSE otherwise.
例
例子 1. A property_exists() example |
<?php
class myClass {
public $mine;
private $xpto;
}
var_dump(property_exists('myClass', 'mine')); var_dump(property_exists(new myClass, 'mine')); var_dump(property_exists('myClass', 'xpto')); ?>
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method_exists