PHP captcha is a security measure used to prevent automated bots from accessing websites or submitting forms. It usually consists of a randomly generated image containing distorted characters that users need to decipher and enter correctly. This helps ensure that the user is a real person rather than a computer program, protecting websites from spam, fraud, and other malicious activities. PHP captcha scripts are commonly used in registration forms, contact forms, and login pages to verify the human identity of users and enhance the overall security of a website.
PHP captcha - 30 examples found. These are the top rated real world PHP examples of captcha extracted from open source projects. You can rate examples to help us improve the quality of examples.