What are best practices for structuring and calling functions in PHP to avoid errors and improve code readability?

To avoid errors and improve code readability when structuring and calling functions in PHP, it is recommended to follow these best practices: 1. Use meaningful function names that describe the purpose of the function. 2. Keep functions short and focused on a single task to improve readability and maintainability. 3. Use proper indentation and formatting to make the code easier to follow. Example:

// Bad practice
function func($a, $b){
    // Function logic here
}

// Good practice
function calculateSum($num1, $num2){
    // Function logic here
}