Implement CAPTCHA in CodeIgniter

by Owais Alam  December 19, 2017

CAPTCHA is a randomly generated string (or a set of images) that appears when verification is required. It is an essential requirement for cutting down the spam at a website. In many cases, it is the only line of defense a website has against bots that spam websites.

CAPTCHA in CodeIgniter

In this tutorial, I will demonstrate how you can easily implement CAPTCHA in your CodeIgniter projects.

Create Controller

The process starts with the creation of the Controller.

Create a file named captcha.php in the Controller folder. Open the file in your code editor and add the following code to it:

Code Explanation

Here is a brief explanation of the various components of the Controller code:

Load CAPTCHA Helper  

Form Submission

CAPTCHA Configuration

Refresh CAPTCHA

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Create the View

The next step is the creation of the View. for this, create a folder in the View folder. Go into the folder and create another folder with the name captcha. inside this folder, create a file named index.php. Add the following code to the file:

Another Method of Calling CAPTCHA with Validation

Here is another method that is used to call in CAPTCHA through CodeIgniter helper and then validate it.

You might also like: How To Pass Data From Controller To View In CodeIgniter

Conclusion

In this tutorial, I discussed how you could easily integrate CAPTCHA into your CodeIgniter projects. If you need help. just drop a comment and I will get back to you.

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About Owais Alam

is the WordPress Community Manager at Cloudways – A Managed WooCommerce Hosting Platform and a seasoned PHP developer. He loves to develop all sorts of websites on WordPress and is in love with WooCommerce in particular. You can email him at owais.alam@cloudways.com

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