Yii Ccaptcha Captcha refers to the imagery device ment to capture bots attempting to fill out your forms for automatic spam submission. It auto generates images with codes that users have to input to submit a form to avoid such spam bot issues. The only real forms that would require this device would be forms accessible to none users of your site, all other forms should be filtered by needing access to your site from a membership. Common Captcha Problems Version 1.1.x Captcha Image doesn't load on page? The first step is to see if the gd extension library is installed and functional for your php engine to read and display the image file. To do this, make a php file with the following code: phpinfo(); This will tell you all the specs of your php install. gd extension is there and working, now what? If the gd extension is operational then the error lies within your code. Let's go through this step by step: Did you define a public variable & rule set ...