Are there specific guidelines or best practices for optimizing PHP script size to improve page load times?

To optimize PHP script size and improve page load times, you can follow these guidelines: 1. Minimize the use of unnecessary whitespace, comments, and indentation in your PHP code. 2. Use functions and classes to modularize your code and avoid repetition. 3. Remove unused code and dependencies to reduce the overall script size.

// Before optimization
function addNumbers($num1, $num2) {
    // Add two numbers
    return $num1 + $num2;
}

// After optimization
function addNumbers($num1, $num2) {
    return $num1 + $num2;
}