What are the best practices for handling variables like $AK within functions in PHP to avoid scope-related errors?

When handling variables like $AK within functions in PHP, it is best practice to use the global keyword to access the variable from the global scope. This helps avoid scope-related errors and ensures that the function can properly use the variable defined outside of it. 

$AK = "example";

function myFunction() {
    global $AK;
    echo $AK;
}

myFunction();

Keywords

variable scope PHP functions global keyword local variables error handling

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