ImportExportCSV

With this code, you can add a new admin page in WordPress and also done functionality to import and export post as CSV

To use this Simply add this file in your functions.php file and edit according to your requirements.

What you can learn by this code

1. Add custom admin menu page in WordPress
2. Add custom sub-admin menu page in WordPress
3. Export any post or custom post data as CSV file
4. Create post by importing CSV file
5. Proper way to add Ajax in WordPress
6. Using nonce field in WordPress