HomePHP Page 12 - Building An Extensible Form Validator Class
Closing Time - PHP
Wondering what OOP can do for you? Well, wonder no more - thisarticle demonstrates how OOP can save you time and effort by building aPHP-based Form Validator object to validate HTML form input. In additionto a detailed walkthrough of the process of constructing a PHP class totest user input, this article also includes usage examples and a brieflook at some powerful open-source alternatives.
And that's about all for the moment. In this article, you expanded your knowledge of PHP's OOP capabilities by actually using all that theory to build something useful - a form validation widget which can be used to verify the data entered into an online form, and provide a way for you to take action in case the data entered by the user does not met your expectations.
If you're a stressed-out Web developer working on a Web site, a Web application or an embedded system, you might find this object a handy tool in your next development effort. If you're a novice programmer struggling to understand how OOP can make your life easier, I hope this article offered some pointers, as well as some illustration of how object-oriented programming works. And if you don't fit into either of those categories - well, I hope you found it interesting and informative, anyway.
See you soon! Note: All examples in this article have been tested on Linux/i586 with Apache 1.3.20 and PHP 4.1.1. Examples are illustrative only, and are not meant for a production environment. Melonfire provides no warranties or support for the source code described in this article. YMMV! YMMV!
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Validating URLs with the Strategy Design Pattern
