Including $pdo in every function that uses database

Hello to everybody!

I have began a little practice project after I have finished the book Php From Novice to Ninja. Like in the book, I have set up the database connection and a functions file, which you can see

With this setup, I have to include the db.php file inside every function to be able to use $pdo. I am wondering, is there a way to set up the database connection code so I don’t have to include the db.php in every function?

Thank you very much!

Best practice would be to put it into a class and then autoload that either with spl_autoload_register or to use something like with PSR-0/PSR-4 autoloading.

However PHP namespaces can work on functions as well so no reason why you couldnt just wrap your function in a namespace and spl_autoload_register that.

More About Php Fig (PSR 0-7).
PHP Modern Practices:

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Pass it as parameter to the function?

function login_user($email, $password, $pdo)

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