get_parent_class
    (PHP 4 )
get_parent_class -- Retrieves the parent class name for object or class
Description
string 
get_parent_class ( mixed obj)
     If obj is an object, returns the name of the      parent class of the class of which obj is an      instance.     
     If obj is a string, returns the name of the parent      class of the class with that name. This functionality was added in PHP      4.0.5.     
     
| Example 1. Using get_parent_class() | <?php
class dad {
    function dad() {
    // implements some logic
    }
}
class child extends dad {
    function child() {
        echo "I'm " , get_parent_class($this) , "'s son\n";
    }
}
class child2 extends dad {
    function child2() {
        echo "I'm " , get_parent_class('child2') , "'s son too\n";
    }
}
$foo = new child();
$bar = new child2();
 ?> | 
 
       The output is:        | I'm dad's son
 I'm dad's son too | 
 | 
     
     See also get_class() and      is_subclass_of().