PHP extends

http://www.php.net/manual/en/language.oop5.inheritance.php

<?

class foo

{

    public function printItem($string)

    {

        echo 'Foo: ' . $string . PHP_EOL;

    }

    

    public function printPHP()

    {

        echo 'PHP is great.' . PHP_EOL;

    }

}

class bar extends foo

{

    public function printItem($string)

    {

echo parent::printItem('lulz');

        echo 'Bar: ' . $string . PHP_EOL;

    }

}

$bar = new bar();

$bar->printItem('baz');