How to Safely Add PHP Code to WordPress Theme’s functions.php Using a Child Theme?

1. Install Child Theme and Active It.
2. Add PHP Code to the Child Theme’s functions.php
   Now that the child theme is active, you can safely add custom PHP code to the child theme’s functions.php file.
3. Open the functions.php file of the child theme.
4. Add your custom PHP code below the existing code in the file, then Save it.
5. Test the Changes.
   
   
   Once you’ve added the PHP code to the functions.php file of the child theme, it’s important to test the website to ensure everything works properly.
   Clear your browser cache or test in an incognito window.
   If you encounter any issues, you can always access the child theme’s functions.php file via FTP or the hosting File Manager to revert any problematic changes.
   
   

You might also be interested to know that adding PHP code to the functions.php file of a WordPress theme through a child theme is the best way to preserve your changes. Not only does it prevent your modifications from being overwritten during theme updates, but it also ensures the security and stability of your site.