January 2019
Intermediate to advanced
600 pages
13h 50m
German
Content preview from PHP 7 und MySQL, 5th EditionBecome 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,
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1Das Prinzip dynamischer Webseiten
PHP ist eine serverseitige Skriptsprache. Was aber bedeutet das genau?
»Serverseitig« heißt erst einmal, dass der PHP-Code nicht auf dem Client, d.h. im Browser, ausgeführt wird, sondern auf dem Server. Um das besser nachvollziehen zu können, muss man sich einmal vor Augen führen, wie die Kommunikation im Internet bei statischen HTML-Seiten ohne PHP-Code abläuft. Diese besteht im Wesentlichen aus zwei Schritten:
- Der Surfer gibt eine Adresse in die Adresszeile seines Browsers ein und drückt auf Enter. Der Browser stellt eine Anfrage (REQUEST) an den Server nach der entsprechenden HTML-Datei.
- Der Server liefert als Antwort (RESPONSE) diese Datei an den Browser, der sie dann darstellt.
In diesem klassischen Fall ...
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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.