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|object-captcha 1.0||BSD License||5||PHP 5, Graphics, Validation|
This class can be used to perform CAPTCHA validation using object images.
README ------ We must connect to a db for this to work ======================================== 1. create a database 2. import objectcaptcha.sql in it 3. set your credentials in db.php ObjectCaptcha works in two steps ================================ * First (in index.php) an image is grabbed, the answer saved to the db, then the registration form displayed. * Second (in register.php) the answer from the db is compared to the input from the form. Some notes on ObjectCaptcha =========================== * A random jpg image will be displayed each time (and its answer saved to the db). * The answer to an image is the image's filename. * Multiple answers can be given for an image. They have to be separated with underscores in the image's filename. For example, for: boot_shoe.jpg the answer can be either 'boot' or 'shoe' * ObjectCaptcha needs a db to temporarily store answers, because it would be unsafe to store them in cookies. * Images are encoded in base64 format and displayed like that, so their original filename cannot be retrieved. * Random garbage is added to the end of an image (JPEG allows this) to protect against hash attacks on the image. * I originally created ObjectCaptcha as a mod for SMF forum. This is a more generic relase that can be used with other systems. Files ===== These are example files, not needed on a production site: db.php index.php register.php readme.txt screenshot.png objectcaptcha.sql is needed only for installation. Any .jpg file placed in the directory will be used by the Captcha.
|index.php||Example||example main page|
|register.php||Example||example second page|
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