Free Medium Series – CodeIgniter 4 CRUD with MySQL

Generally, most all web applications are going to follow the elements of CRUD: Create, Read, Update, and Delete. CodeIgniter 4 is a powerful PHP web development framework that provides a rapid development environment. The CodeIgniter 4 Models come enriched with built-in CRUD functionality, which is covered in this compilation of Medium posts…

Image by Dariusz Sankowski from Pixabay 

Disclaimer: I originally published these articles first over on Medium, as part of the paywall in order to earn a small amount of compensation based on user read time, engagement, and views. However, I realize some readers may not be a member of the platform.

Therefore, I am sharing a friend link version of each article so that anyone can read and benefit from the posts. I do encourage you to become a Medium member (visit my sign-up link below). There are thousands of high-quality articles you can read from some of the best writers in the industry. And, you can read as many as you would like without limit.


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CodeIgniter 4 CRUD Series with MySQL: Create

CRUD operations — Create, Read, Update, and Delete — are integral in any application in which data persists. Introducing a new row or rows of data is under the domain of Create and will be covered in this post.

Read the full post…

CodeIgniter 4 CRUD Series with MySQL: Read

Now that project data exists in the database, chances are someone will want to see it. Typically, reading the data is 1 of a couple of different operations…

Read the full post…


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CodeIgniter 4 CRUD Series with MySQL: Update

Data seldom remains unchanged. Applications manipulate data that is in constant change. Therefore, data is constantly changing…

Read the full post…

CodeIgniter 4 CRUD Series with MySQL: Delete

The SQL DELETE command is used to remove existing data from a database table. Perhaps you want to remove all the data. An unfiltered DELETE will do just that (Be careful!!!).

Read the full post…


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Bonus Content

I am so excited that you have made it to the end of the post. As a bonus, and to show my appreciation, I am including a couple of more friend links to similar pieces of Medium paywall content I have written. These posts will help you in building those almighty important SQL Chops! Enjoy!


Thank you for reading this post. Please share it with someone else who would enjoy it as well.




Josh Otwell has a passion to grow as a PHP Developer, SQL expert, and technical blogger/writer.

Disclaimer: The majority of examples in this post, are performed in a personal development/learning workstation environment and should not be considered production quality or ready. Your particular goals and needs may vary. Like always, just because you can do something doesn’t mean you should. My opinions are my own.

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