CodeIgniter 4 is a solid, well-designed PHP framework and one I enjoy using and exploring every chance I get. In 2022, the CodeIgniter 4 team released many database-related upgrades. Learn more about the ones I found most significant in this OpenLampTech report.

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UNION and UNION ALL set operators return the combined rows from 1 or more SELECT queries. CodeIgniter 4 Query Builder now supports UNION and UNION ALL queries with the $builder->union() and $builder->unionAll() methods respectively. Learn how to create these types of queries in this article.

This article and many to follow, are part of a series of articles I am writing and sharing as I learn new concepts when I learn them. I think of it as a duty in sharing the things I learn as a self-taught developer. We all need to support one another as we continue to learn and grow. #buildinpublic #learninpublic #indiehackers #developer

The Newsletter for PHP and MySQL Developers

Receive a copy of my ebook, “10 MySQL Tips For Everyone”, absolutely free when you subscribe to the OpenLampTech …

As powerful and useful as the CodeIgniter 4 Query Builder class methods and functions are, there are times when you need to hand-craft your own queries. Perhaps they are complex. Or, you would just rather write the raw SQL. Learn how to safely use the input you need – typically as part of the WHERE clause conditional(s) – using 2 different parameter binding variations with examples in MySQL.

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Getting a count of table or query rows in CodeIgniter 4 is quite easy using either of the Query Builder countAll() or countAllResults() functions. Continue reading to see examples of each…

Do you need to learn MySQL? Just starting and confused about how to query a table and get the data you need? I am creating premium MySQL Beginners content for this specific reason. To help those who want to learn the basics of MySQL but don’t know where to start. Learn more about the premium blog posts as I develop and release them.

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In SQL, the WHERE clause filters rows returned by the FROM clause table in SELECT queries using one or more search condition filters. Oftentimes, in application development, we accept user input values which in turn, are the WHERE clause conditional filters against the table columns. In this post, I am covering the CodeIgniter 4 where() function and parameter binding for safer filtering in SELECT queries. Continue reading and see examples in MySQL…

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CodeIgniter 4 Query Builder class has an update() function used to process UPDATE Data Manipulation Language (DML) commands. Using update() as a standalone function call is perfectly valid. However, there is also a set() function used for setting column values as you would with the SET keyword in an SQL UPDATE statement. Used in conjunction with the Query Builder where() function, you can easily UPDATE column values for an individual row or multiple rows. Continue reading for more information…

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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…

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Disclaimer: I originally published these articles first over on …

I use CodeIgniter 4 a great deal for learning, personal projects, and application development. In this post, I cover 2 different methods you can use and retrieve the MySQL Last Insert ID value after executing an INSERT statement in CodeIgniter. Continue reading for more information…

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Model Setup

Starting out, I use the CLI Generator feature and create a Model by executing this code in the terminal in the project root:

php spark make:model user --suffix

I have removed much of the …

When the time comes that you no longer have a need for specific data, use DELETE to remove it completely from your table. CodeIgniter 4 Models have a delete() method that is super-easy to use. Continue reading for more information…

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If you enjoy the content written here, by all means, share this blog and your favorite post(s) with others who may benefit from or like it as well. Since coffee is my favorite drink, you can even buy me one if you would like!

CodeIgniter 4 CRUD Series with MySQL

I have written a now complete 4-part series over on my Medium account about CodeIgniter 4 Model CRUD operations. Feel free and visit any of the previous posts in the series to get up to speed:

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In some applications, data may never change. Yet, in others, data changes numerous times in its lifecycle. In SQL the UPDATE command changes existing rows of data. CodeIgniter 4 Models have 2 methods available for update operations: update() and save(). Continue reading and learn more about update()…

Self-Promotion:

If you enjoy the content written here, by all means, share this blog and your favorite post(s) with others who may benefit from or like it as well. Since coffee is my favorite drink, you can even buy me one if you would like!

CodeIgniter 4 CRUD Series with MySQL

This post is a re-share of an article I originally published on my Medium account and is part 3 in the CodeIgniter 4 CRUD with MySQL series. Be sure and …