What does the line "global $variable" mean in PHP?

Using the line "global $variable" in PHP allows you to access a global variable within a function. This is necessary when you want to modify a global variable from within a function's scope. By using the "global" keyword, you can indicate that the variable being referenced is the global one, not a local variable with the same name. 

$globalVar = 10;

function modifyGlobalVar() {
    global $globalVar;
    $globalVar += 5;
}

modifyGlobalVar();
echo $globalVar; // Output: 15

Keywords

global variable PHP scope global keyword

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