Head Rush Ajax

98

Chapter 2

Request URLs deliver data to the server

Since there’s no domain name in the

URL, the request automatically goes to

the same server that the web page was

served from-the Break Neck web server.

The “?” symbol tells the server that

anything after the “?” should be

passed on to the target of the URL.

This data is sent on to the PHP script. The

script can access the request parameter

by its name (“phone”) and use its value to

lookup the customer’s address.

Here’s the PHP script, named

lookupCustomer.php.

Break Neck’s

web server.

The server gures out exactly what

program it should send the request to,

using the rst part of the URL.

lookupCustomer.php?phone=

The simple little request URL in getCustomerInfo() has a lot

of responsibility. Let’s take a closer look, and see exactly what that

request URL is doing:

The complete request URL.

lookupCustomer.php

phone=

Remember, the server passes

on everything after the “?”

to the program indicated in

the request URL.

7081 Teakwood #24C

Dallas, Texas 75182

Customer Address

Finally, the script

uses the information

in the request

to look up the

customer’s address.

request urls