Why is it impossible to connect to the database through the function?

Question

PHP

I can't connect to the database through a function.
Here is that function:

function connect()
{
  $dbc = mysqli_connect('localhost','root','','lesson');
  return $dbc;
}

When you output this function. And you check for the existence of the $dbc variable, it turns out that this variable does not exist.
If you connect directly like this, then everything works:

$dbc = mysqli_connect('localhost','root','','lesson');

It seems to me that the error is in the function.

Answer 1

The scope of the $dbc variable is limited to the connect() function.