Overriding functions

PHP allows us to redefine functions in sub-classes, which means we can make the poodle class have its own version of bark(). This is done by simply redefining the function the function inside the child class, making the poodle class look like this:

class poodle extends dog {
    public function bark() {
        print "Yip!\n";
    }
}

We'll come back to inheritance and all the neat ways you can use it after we take a look at objects - actual instances of our classes.

Want to learn PHP 7?

Hacking with PHP has been fully updated for PHP 7, and is now available as a downloadable PDF. Get over 1200 pages of hands-on PHP learning today!

If this was helpful, please take a moment to tell others about Hacking with PHP by tweeting about it!

Next chapter: Objects >>

Previous chapter: Basic inheritance

Jump to:

Home: Table of Contents