April 2007
Intermediate to advanced
720 pages
12h 52m
English
Content preview from Ajax Bible
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,
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.
Chapter 12
Introducing Ajax and PHP
IN THIS CHAPTER
- Mixing PHP with HTML
- Echoing text to the browser
- Working with variables
- Working with arrays
- Using if statements
- Using switch statements
- Using for loops
- Using while loops
- Using foreach loops
Ajax developers work on the server as well as in the browser, of course, and the most common server-side language used with Ajax these days is PHP. Accordingly, this chapter and Chapter 13 give you an introduction to using PHP with Ajax.
Getting Started with PHP
You can embed your PHP scripts inside HTML pages if you enclose the scripts in special markup. In code, you should enclose your PHP scripts (which are stored in files with the extension .php) inside the markup <?php and ?> like this:
<?php
.
.
.
PHP goes here
.
.
.
?>
However, in practice, you can use <? and ?>, and the server will still understand:
<?
.
.
.
PHP goes here
.
.
.
?>
A PHP-enabled server will execute the PHP code inside the <?...?> markup. Here's an example that runs the built-in PHP function phpinfo, phpinfo.php, which creates an HTML table that tells you about your PHP installation.
Note in particular how the HTML and PHP are interspersed in this example, phpinfo.php. Also note that as in JavaScript, you end each PHP statement with a semicolon (;).
<html> <head> <title> A first PHP example </title> </head> <body> <h1> A first PHP example </h1> <? phpinfo(); ...
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.