Introduction - If you have any usage issues, please Google them yourself
A graphical checksum identification procedures, similar to many sites on the verification code function, you can specify validation code the type of information, such as the case of English, numbers, randomly mixed, you can specify to verify that the code length, specify the background image, the strongest can be displayed as GG bending irregular text, in short, is a good demo program, remember that friends asked me to lead, this is not found immediately sent out.