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The wp-config.php file is one of WordPress’ most important files. It contains the configuration information required to make WordPress work. As the name suggests, it is written in PHP – the language upon which WordPress is built.
The file is automatically generated when you install WordPress; however, it can be edited at any point after that. While you’re not required to access or edit the file in the ordinary course of managing your WordPress website, you may need to do so in certain circumstances. This is what we will discuss next.
Note: If you’re going to edit the file for any reason, make sure you take a backup first.