Database errors are common while working with Codeignitor. It is mainly due to the wrong settings in the database configuration file.

As a part of our Server Management Services, we help our customers to fix similar database errors.

Today let’s discuss some tips to fix this error.

What causes the Codeigniter database error?

CodeIgniter has a configuration file that stores our database connection values like username, password, database name, etc. The config file is located at app/Config/Database.php. A sample format of this file is :

When the entries in the configuration contain some incorrect values, it triggers database errors. However, the exact error message triggered may depend on the incorrect entry. For instance, if the database name contains an extra space, the error message would be:

The common causes for this error include:

1. Improper database configuration in application/config/database.php
2. Non-existing database
3. No permission granted for the database user

Let us now look at the possible solutions for each case.

How to fix the Codeigniter database error

The method to fix the database error in Codeignitor depends on the exact error message that is triggered. For instance, a recent error message we received was:

A Database Error Occurred

SQLSTATE[28000] [1045] Access denied for user 'root'@'localhost' (using password: NO)

This error message says that the access of the user with the given details is denied. To fix the error, first, we need to cross-check the database credentials configured in the configuration file. Make sure that there are no extra characters appended with the credentials in the file. Also, it is important to ensure that MySQL users have proper permissions set up to access the database.

Misspelled database name in the configuration file can also trigger this error. For instance, if an extra space is appended at the end of the database name. The system then, interprets it as a separate database name and the user receives a message that the database does not exist. Removal of the extra space from the database name will correct this error

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Conclusion

In short, the Codeigniter database error triggers normally due to invalid entries in the configuration file. Today, we discussed how our Support Engineers fixes the Codeignitor database error.