Working with Forms

Windows IT Pro

- Advertise

Working with Forms
View the book table of contents

Author:	William Steinmetz
Published:	February 2008
Copyright:	2008
Publisher:	No Starch Press

Forms are how your users talk to your scripts. To get the most out of PHP, you must master forms. The first thing you need to understand is that although PHP makes it easy to access form data, you must be careful of how you work with the data.

Chapter Contents

Security Measures: Forms Are Not Trustworthy
Verification Strategies
Using $_POST, $_GET, $_REQUEST, and $_FILES to Access Form Data
#25: Fetching Form Variables Consistently and Safely
#26: Trimming Excess Whitespace
#27: Importing Form Variables into an Array
#28: Making Sure a Response Is One of a Set of Given Values

Hacking the Script

#29: Using Multiple Submit Buttons
#30: Validating a Credit Card

Using the Script
Hacking the Script

#31: Double-Checking a Credit Card’s Expiration Date

Using the Script

#32: Checking Valid Email Addresses
#33: Checking American Phone Numbers

Pages: 1

go to page 1

ADS BY GOOGLE

FEATURED LINKS

WinConnections Conference Fall 2008
Don’t miss the premier event for Microsoft IT Professionals in Las Vegas, November 10-13. Register and book your room by August 25 and receive a FREE room night (based on a three night minimum stay).

Deploying SharePoint! In-Person Event Series – 8 Cities
Discover best practices and tips for deploying the perfect SharePoint infrastructure. Early Bird Price of $99 extended till Sept. 15th.

Find a new job now on the all new IT Job Hound!
Search jobs, post your resume, and set up job e-mail alerts!

Master SharePoint with 3 eLearning Seminars
Learn how to build a better SharePoint infrastructure and enable powerful collaboration with MVPs Dan Holme and Michael Noel. Register today!

Top Tools for Virtualization Disaster Recovery & Replication
View this web seminar on August 14th to learn about two tools that will result in faster backup and restore with P2V disaster recovery.

SharePointConnections Conference Fall 2008
Don’t miss the premier event for Microsoft IT Professionals in Las Vegas, November 10-13. Register and book your room by August 25 and receive a FREE room night (based on a three night minimum stay).

VMworld 2008 - Sign Up Today!
Join your peers on September 15-18 at The Venetian Hotel in Las Vegas as VMware hosts VMworld 2008, the leading Virtualization event.

When managing just VMware isn’t enough
Plan/Manage/Secure – NetIQ VMware management. Download whitepaper.

What’s up with your network? Find out with ipMonitor
Availability monitoring for servers, applications and networks – FREE trial

Microsoft® Tech•Ed EMEA 2008 IT Professionals
Advance your thinking with new ideas and practical real-world solutions at Microsoft’s FIVE day technical infrastructure conference 3-7 Nov., 2008. Register before 26 September 2008 to save €300.

Order Your Fundamentals CD Today!
Gain an introduction to Exchange, learn server security requirements, and understand how unified communications can play a role in your messaging strategies with this free Exchange CD.

Are You Really Compliant with Software Regulations?
View this web seminar that will help you with compliance best practices and check out a management solution to assure that you won’t be in jeopardy of an audit.

Virtualization Congress Oct. 14-16 in London
Don't miss Virtualization Congress, the premiere EMEA conference dedicated to hardware, OS and application virtualization. Oct. 14-16 in London.

Windows IT Pro Home

FAQ for Windows

WinInfo News
Europe Edition

About Us

Media Kit

Affiliates / Licensing

SQL Server Magazine

Office & SharePoint Pro

Windows Dev Pro

IT Job Hound

ITTV
IT Library

Technical Resources Directory

Connected Home

Windows Excavator

Windows SuperSite