Captcha Images Settings
Captcha Image Settings are the ninth group on the Settings Page.
Minimum requirement for the capthca system to work are as follows: GD library with ~FreeType installed by your forum provider/host and php version 4.3 or greater installed.
This is the main control and must be on for the captcha to work.
This is the control for the captcha to be used for registrations
Anonymous Posting Status:
If anonymous posting is allowed on your forums this control will make them use the captcha image before posting. Logged in members will not see the images.
This is where you can enter the characters you wish to use in the images. You must separate the characters with a comma. You can also enter ranges (eg: a-z, 0-9, A-Z).
How many characters do you want to display in the image
Case Sensitive Code:
This gives you the option to use case sensitive characters. Whilst on, users must enter the characters exactly as they appear. Please remember that characters like o, s, w, x, z can be hard to decipher if uppercase is required.
Adds a shadow under each image for extra security.
This is the type of image (gif, jpg, png etc.)
How wide should the background image be.
How high should your background image be.
Enter the full path to the location of your captcha images directory as found from the root of your forum, i.e, images/captchaimages. If there is more than one image they will be randomly displayed upon new registrations.
Alternatively you can enter individual file name(s) separated by commas to select only desired images.
Number of Random Dots:
Number of dots to randomly place in the image.
Number of Random Lines:
Number of lines to randomly place in the image.
Fonts to be used for the characters in the image. These can be entered as font names separated by comma's, a directory, or an individual font name. The fonts entered, must be on your server.
Min Font Size:
This is the minimum font size that characters will be displayed in your image.
Max Font Size:
This is the maximum font size that characters will be displayed.
Use Full Color:
Whilst on, the image character(s), and dots / lines will use full random colors. Whilst off, they will be grey scale.