In what ways can the lack of variable scope awareness within functions lead to errors in PHP scripts, and how can this be mitigated?

Lack of variable scope awareness within functions in PHP can lead to errors when trying to access variables defined outside of the function's scope. This can be mitigated by using the global keyword to explicitly declare that a variable is being accessed from the global scope within the function. 

$globalVar = 10;

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

testFunction(); // Output: 10

Keywords

variable scope errors PHP scripts mitigation functions

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