PHP Captcha Object
for Dreamweaver
 This product is fully compatible with Adobe Dreamweaver CS5!
Quickly add Captcha functionality to your web forms with PHP Captcha Server Object (PHP/MySQL only):
- Compatible with Dreamweaver built-in Server Behaviors (e.g. Insert Record, Update Record, Log In User, etc).
- Can be utilized with almost any third-party extension or with your own custom code.
- Customizable parameters include:
- Color of the generated verification text.
- Background Image in PNG, GIF or JPEG format (extension comes with a default image - see example below).
- Background color (not visible when background image is used)
- Number of characters in the generated verification string (3-15 characters).
- Error message which will appear on the page if text is entered incorrectly.
- Approximate Preview of the generated image along with the verification text field.
New in version 1.0.8:
- Turned off autocomplete for the Captcha field.
- Captcha image can be refreshed by clicking on it to generate a more legible text output.
- Improvements in error handling.
This extension is compatible with Dreamweaver MX 2004, Dreamweaver 8, Dreamweaver CS3, Dreamweaver CS4, and Dreamweaver CS5.
It comes with a detailed User Manual (use Help button in the extension's dialog)
Once placed on your PHP page the Captcha object will look fairly close to what will be rendered in the browser (see example below). The Object will render BOTH the Captcha image and the text field for entering verification text.
The Object's parameters can be modified through the Property inspector and PHP Captcha Server Behavior dialog.
What's Captcha?
According to Wikipedia “captcha (an acronym for "completely automated public Turing test to tell computers and humans apart") is a type of challenge-response test used in computing to determine whether or not the user is human”.
Captcha is a small image with randomly generated text placed on a web form next to a designated text field. To submit the form user must type the text seen on the image into the text field. Thoroughly written server-side code will allow the form to be submitted only if the text has been entered correctly. To make it even more “spammer-proof” the verification text can be slightly scrambled, rotated and/or appear over a patterned background.
Since no modern software can (reliably) read text from images, Captchas make it really hard (if not impossible) to automate form submission procedure, thus protecting web sites against unfriendly actions, like mass web form spam or brute force attacks. |
