What is the potential issue with wrapping the code in a function in PHP?

One potential issue with wrapping code in a function in PHP is that variables defined outside of the function may not be accessible inside the function. To solve this issue, you can use the `global` keyword to make those variables accessible within the function. 

$globalVar = "I am a global variable";

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

myFunction(); // Output: I am a global variable

Keywords

Scope Variable scope Global variables Function parameters Return value

Related Questions