PHP Parent Class Calling subclass Method Instance _php Tutorial

This article to the students to introduce the PHP parent class Call subclass method instance, I hope this tutorial for you to help the reunion Oh.

Today, we suddenly find that we need to call the subclass in the parent class, which has not been used before, and can be found through practice. Examples are as follows:

The code is as follows

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/** * Parent class calls subclass method base class * @author LNMP100 * */ Class Baseapp { /** * Call Subclass Method * @version creation Time: 2013-07-10 */ function _run_action () { $action = "index"; $this $action (); } } Class Defaultapp extends Baseapp { /** * This method will be called in the parent class */ Function index () { echo "Defaultapp->index () invoked"; } function Go () { Calling the parent class Parent::_run_action (); } } $default =new Defaultapp (); $default->go (); The Defaultapp->index () invoked is displayed ?>

We called in the Go () method of the parent class.

$default->go ();

Swim is the method defined by the subclass (note that we do not define abstract function swim () in the parent class), indicating that this is not polymorphic. We not only called the method, but also called the member, which is OK.

http://www.bkjia.com/PHPjc/632664.html www.bkjia.com true http://www.bkjia.com/PHPjc/632664.html techarticle This article to the students to introduce the PHP parent class Call subclass method instance, I hope this tutorial for you to help the reunion Oh. Today suddenly found a way to call a subclass in the parent class ...

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