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PHP Input Filter: Filter out unwanted PHP / Javascript / HTML tags.

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  Author Author  
Picture of Daniel Morris
Name: Daniel Morris <contact>
Classes: 1 package by
Country: United Kingdom United Kingdom
Age: 31
All time rank: 806 in United Kingdom United Kingdom
Week rank: 110 Down5 in United Kingdom United Kingdom Up
Innovation award
Innovation award
Nominee: 1x


  Detailed description   Download Download .zip .tar.gz   Install with Composer Install with Composer  
This class can filter input of stray or malicious PHP, Javascript or HTML tags and to prevent cross-site scripting (XSS) attacks. It should be used to filter input supplied by the user, such as an HTML code entered in form fields.

I have tried to make this class as easy as possible to use. You have control over the filter process unlike other alternatives, and can input a string or an entire array to be cleaned (such as $_POST).

** SQL Injection feature has been added.

  Classes of Daniel Morris  >  PHP Input Filter  >  Download Download .zip .tar.gz  >  Support forum Support forum (25)  >  Blog Blog  >  RSS 1.0 feed RSS 2.0 feed Latest changes  
Name: PHP Input Filter
Base name: inputfilter
Description: Filter out unwanted PHP / Javascript / HTML tags.
Version: 1.0.0
PHP version: -
License: GNU General Public License (GPL)
All time users: 19678 users
All time rank: 29
Week users: 14 users
Week rank: 73 Down
 
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  Groups  
Group folder image Text processing Manipulating and validating text data View top rated classes
Group folder image Security Security protection and attack detection View top rated classes

  Files folder image Screenshots  
testsuite.png
File Role Description
Accessible without login Image file testsuite.png Screen Shows testsuite script in action.


  Innovation Award  
PHP Programming Innovation award nominee
March 2005
Number 4


Prize: One subscription to the PDF edition of the magazine by PHP Architect
One of the most common security problems of Web sites is the vulnerability to cross-site scripting (XSS) attacks.

It allows to steal values of cookies that can be sent to different sites from those that originated the cookie values. This may allow an attacker to access a site impersonating an authenticated user by taking advantage of a stollen session cookie.

This kind of vulnerability exists on sites that display information provided by the users without properly escaping it before presenting in HTML pages. If the user supplied information to be displayed is unformatted text, it can be easily escaped by using the PHP function HTMLEntities().

However, if an user can submit HTML code to a site that displays it without previous validation and eventual cleaning of malicious Javascript or PHP code, the site is vulnerable to eventual cross-site scripting attacks.

This class provides a solution to perform the necessary cleaning of HTML code from dangerous cross-site scripting attack code.

Manuel Lemos

  User ratings  
RatingsUtility Consistency Documentation Examples Tests Videos Overall Rank
All time: Good (90%) Good (83%) Good (83%) Good (87%) - - Sufficient (70%) 182
Month: Not yet rated by the users

  Pages that reference this package  
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Cleaning up Your Inputs in PHP
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Cleaning Up Your Inputs In PHP
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  Related pages  
Project Homepage
Project Details and Interactive demonstration
Tag and Attribute Blacklist.
Lists what tags etc are blocked if "xssauto" feature is on.
XSS Cheat Sheet
Interesting page for reference purposes.

  Files folder image Files  
File Role Description
Accessible without login Plain text file class.inputfilter.php Class PHP4/PHP5 with comments
Plain text file class.inputfilter.php5 Class PHP5-Strict with comments
Accessible without login Plain text file class.inputfilter_clean.php Class PHP4/PHP5 without comments
Plain text file class.inputfilter_clean.php5 Class PHP5-Strict without comments
Accessible without login Plain text file index.php Example Play around with your own examples on the fly.
Accessible without login Plain text file readme.txt Doc. Blurb / Instructions / Features

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