How can PHP developers ensure that variables defined in a function are accessible outside of the function scope?

To make variables defined in a function accessible outside of the function scope in PHP, developers can use the "global" keyword to declare the variable as global within the function. This allows the variable to be accessed and modified outside of the function. 

<?php

$globalVar = "I am a global variable";

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

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

Keywords

PHP variable scope global keyword return statement function parameters

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