How can proper variable initialization and scoping prevent errors like undefined variable notices in PHP scripts?

Improper variable initialization and scoping can lead to errors like undefined variable notices in PHP scripts. To prevent this, always initialize variables before using them and make sure they are within the correct scope. This can help avoid errors and make your code more robust.

// Incorrect code that may lead to undefined variable notices
function exampleFunction() {
    $variable = 10;
    echo $var; // Notice: Undefined variable: var
}

// Corrected code with proper variable initialization and scoping
function exampleFunction() {
    $variable = 10;
    echo $variable; // Outputs 10
}