Simple captcha code in php

        1. How captcha code is generated in php

          2. How to add captcha in php registration form...

          by Vincy.

          Php captcha gd library

          Last modified on July 19th, 2022.

          When allowing users to enter data into our website, we need to check whether the data is entered by the human. Otherwise, people will use robots to push the bulk of unwanted data into the website.

          Allowing malicious access will cause a lot of problems.

          For example, XSS attack or SQL injection and more.

          Sometimes it will increase server load and let it down. It may annoy your regular users due to the unavailability of the website.

          It prevents anonymous access and stops robots from sending data.

          View Demo

          It is generated in run time.

          I am not a robot captcha code in php

        2. Php contact form with captcha
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          6. It can be in a variety of modes. For example,

          • Text mode
          • Audio mode
          • graphical mode and more

          I have created this example without using any third-party plugins.

          It has minimal and structural code by which you can have a clear idea about how it works.

          It contains a contact form to get names, email, message subject and messages from the users.

          The input element named 

          The php This file creates a random token and embeds it on a dynamically created image source.

          The be