Question: Good Day

When you are inside the wordpress ctrl panel, and you edit/create posts, do theme changes etc, where does Wordpress store all that content? In which files?

Thank you

Answer: 
That information is stored in the MySQL database, not in files like you may be thinking of. They aren't stored in `.php` or `.html` files. 

If you want to "see" how and where that data is stored the easiest way is to browse the database using a tool like PhpMyAdmin.

NOTE: Technically, there are files associated with the MySQL database but they aren't easy to get to and you can't read them except through the interface provided by the MySQL engine.
If your theme is called *my-theme* the configuration is stored as serialized PHP object in a option name called theme\_mods\_*my-theme* in the `wp_options` table in your Wordpress database.
Use any Database editor tool to execute the query:

```
SELECT * FROM `wp_options` WHERE `option_name` LIKE 'theme_mods_%'

```

with will return all the customizations for every theme you have in your wordpress install.

Export the query results to a SQL plain text file. Then, when you update your theme, you import your SQL file again and voilà, you have your customizatons again.