How to write php CAPTCHA function
This article mainly introduces "how to write php CAPTCHA function". In daily operation, I believe many people have doubts about how to write php CAPTCHA function. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubt of "how to write php CAPTCHA function". Next, please follow the editor to study!
The details are as follows
Code snippet 1: simple php CAPTCHA function
Code snippet 2: php CAPTCHA function
Function _ code ($_ code_length = 4, $_ width = 75, $_ height = 25) {for
