News Feed
Sections




News Archive
Looking for more information on how to do PHP the right way? Check out PHP: The Right Way

DevShed:
Sanitizing Strings with Filters in PHP 5
September 03, 2009 @ 07:21:53

DevShed rounds the final corner on their sanitizing user input series of tutorials with the eighth part, a look at filtering inputted strings to remove potentially dangerous issues.

In this part, I discuss how to use the filter extension for sanitizing strings in all sorts of clever manners. I'll show you how to encode quotes, low and high ASCII characters in literals, and remove them in the same easy manner. Doing this can help prevent SQL injections and XSS attacks when developing PHP applications.

Their code shows how to use the FILTER_SANITIZE_STRING, FILTER_FLAG_NO_ENCODE_QUOTES, FILTER_FLAG_STRIP_LOW, FILTER_FLAG_STRIP_HIGH, FILTER_FLAG_ENCODE_LOW and FILTER_FLAG_ENCODE_HIGH filtering methods on a sample string or two and what they'd result in.

0 comments voice your opinion now!
filter extension tutorial string


blog comments powered by Disqus

Similar Posts

NetTuts.com: How to Write Testable and Maintainable Code in PHP

NetTuts.com: Wrangling with the Facebook Graph API

NETTUTS.com: Run Your Own TinyURL Service With Phurl

Carl Vuorinen: Installing SonarQube with Jenkins integration for a PHP project

AnyExample.com: Making XML/XSLT driven site using PHP


Community Events

Don't see your event here?
Let us know!


framework conference voicesoftheelephpant community performance api release library example application podcast introduction extension opinion symfony2 series version interview php7 laravel

All content copyright, 2015 PHPDeveloper.org :: info@phpdeveloper.org - Powered by the Solar PHP Framework