Question

Is there a way to get around having to reference Global variables inside a function in PHP?

I just hate having to use the ‘global’ keyword for every variable, and I’ve been told that using constants (as an alternative) in PHP affects performance badly.

Answer 1

if you have to use many global variables inside of your function, something has been designed wrong.

Using even a few global variables considered bad practice, making code non-obvious.
And constants are not a solution despite of falseness of that “badly performance” rumor

If you need to use many variables inside of a function, consider array use

$data   = array("one","two","three");
$result = myfunc($data);

simple, reliable and readable

with more detailed explanation of what this function do and what all these variables for, you can get more precise answer.