What is the significance of using global variables in PHP functions?

Using global variables in PHP functions can lead to issues with code readability, maintainability, and potential conflicts with variable names. It is generally considered a best practice to avoid using global variables within functions and instead pass variables as parameters to the function. 

// Avoid using global variables in PHP functions
$globalVar = 10;

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

exampleFunction();

Keywords

global variables PHP functions scope variable scope programming concept

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