Innovation Award
April 2007
Number 3 |
More and more people have been using robots to make abusive use of Web sites. Usually robots pretend to be real users, or make unauthorized copies of whole sites, or even causing excessive to the site servers.
Many sites have implemented measures to halt robots like using CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) validation forms. However, this kind of validation is usually a little annoying to the users.
This class implements other measures that may help detecting when robots are using Web forms without being too intrusive to the users.
This way the users are usually not aware of the measures that have been implemented to halt robots, but not real humans.
Manuel Lemos |
This class can be generate forms that prevent submission by spam robots without requiring human users to enter special values.
It generates hidden inputs for forms that have special values that are verified on the server after the form is submitted to eventually detect whether the form was sent by a spam robot.
The class can generate an hidden input that contains an encoded value of the user browser, user computer IP address and the current time.
The class verifies whether these browser name and IP address are still the same, and also whether the form is being submitted by a normal time interval after it was create, like when it is submitted by a real human user.
The class also generates a text input that are invisible for the user. A human user would not fill this input. If the input is submitted with a value, it was certainly a robot.
When the class detects a situation that demonstrates the form was submitted by a robot, the application should not accept the form submission.
| Ratings | Utility |
Consistency |
Documentation |
Examples |
Tests |
Videos |
Overall |
Rank |
| All time: |
Good (92.9%) |
Good (92.9%) |
Good (82.1%) |
Good (82.1%) |
- |
- |
Sufficient (72.1%) |
113 |
| Month: |
Not yet rated by the users |
No application links were specified for this class.
If you know an application of this package, send a message to the
author to add a link here.
| File |
Role |
Description |
 fsbb.php |
Class |
the class source |
| readme.txt |
Doc. |
the doc file |
| example.php |
Example |
an example of a protected web form |
| action.php |
Example |
an example of a protected form submission |
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