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get_parent_class — Finds the parent class of an object.


string get_parent_class(obj);
object obj: Object for which you want to find the parent class


Name of the parent class; FALSE if obj is not an object


get_parent_class() returns the name of the parent class of an object. In other words, if the specified object is an instance of a class that extends another class, get_parent_class() returns the name of the class that's being extended.

If the obj argument is not an object, the function returns FALSE.


PHP Version: 4.0b2+

See also



Example 107. Find the parent class of an object

class vehicle {
    var $passenger_num;
    var $power_source;
    var $travel_medium;

class jinrikisha extends vehicle {
    var $wheels = 2;

    function jinrikisha () {
        $this->passenger_num = '1 to 2';
        $this->power_source = 'human/pulled';
        $this->travel_medium = 'land/roads';

$my_jinrikisha = new jinrikisha ();

$class = get_class ($my_jinrikisha);
$class_parent = get_parent_class ($my_jinrikisha);

print "Object \$my_jinrikisha is an instance of class <i>$class</i>. ";
print "Class<i>$class</i> extends class <i>$class_parent</i>";

PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at The authors of this book have elected not to choose any options under the OPL. This online book was obtained from and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.

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