Web Reference: Mar 24, 2026 · You can connect to your database by adding this line of code in any function where it is needed, or in your class constructor to make the database available globally in that class. Nov 21, 2023 · If you need to handle several types of data or perform splits for scale, CodeIgniter 4 makes it simple to connect to and interact with many databases. This lesson will walk you through the full process, from setting up database connections to running queries and transactions. Aug 19, 2023 · Connecting your database with your Codeigniter 4 application is different from Codeigniter 3. In Codeigniter 3, we always connect our database by adding the username, password, and database name. That's it, but in CodeIgniter 4, you must take extra steps to connect the database with our application.
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