PHP Web Services
by Lorna Jane Mitchell
Copyright © 2013 Lorna Jane Mitchell. All rights reserved.
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Illustrator: Rebecca Demarest
April 2013: First Edition
Revision History for the First Edition:
2013-04-19: First release
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ISBN: 978-1-449-35656-9
[LSI]
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Table of Contents
Preface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
1.
HTTP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Clients and Servers 3
Making HTTP Requests 4
Curl 4
Browser Tools 6
PHP 8
2.
HTTP Verbs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Making GET Requests 11
Making POST Requests 13
Using Other HTTP Verbs 15
3.
Headers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Request and Response Headers 20
Common HTTP Headers 20
User-Agent 21
Headers for Content Negotiation 22
Securing Requests with the Authorization Header 26
Custom Headers 27
4.
Cookies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Cookie Mechanics 29
Working with Cookies in PHP 31
5.
JSON. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
When to Choose JSON 34
Handling JSON with PHP 35
iii
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