What potential pitfalls should be considered when using the return statement in PHP functions?

One potential pitfall when using the return statement in PHP functions is forgetting to return a value when the function is expected to return something. This can lead to unexpected behavior or errors in your code. To avoid this issue, always ensure that your function returns a value before the function ends.

// Incorrect usage without returning a value
function addNumbers($a, $b) {
    $sum = $a + $b;
    // Missing return statement
}

// Corrected function with return statement
function addNumbers($a, $b) {
    $sum = $a + $b;
    return $sum;
}