June 2005
Intermediate to advanced
794 pages
18h 27m
German
Content preview from PHP 5 KochbuchBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
7.3 Ein Objekt durch eine Unterklasse erweitern
Problem
Sie möchten eine Objektklasse durch eine Kindklasse erweitern. Zum Beispiel möchten Sie neue Eigenschaften oder Methoden hinzufügen, oder Sie wollen das Verhalten einer Methode ändern.
Lösung
Deklarieren Sie eine Kindklasse, indem Sie die Elternklasse mit extends erweitern:
// Deklaration der Elternklasse
class business {
public $name;
public $address;
public function get_info_as_html() {
return "<b>".$this->name."</b><br/> <br/>".nl2br($this->address);
}
}// Deklaration der Kindklasse class airline extends business { public $destinations = array(); public function get_info_as_html() { $info = "<b>".$this->name." Airlines</b><br/> </br>".nl2br($this->address); $info .= "<br/> <br/>Destinations: ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.