How can PHP developers improve their programming style and avoid common errors when writing code?

Issue: PHP developers can improve their programming style and avoid common errors by following best practices such as using meaningful variable names, commenting their code, and breaking down complex tasks into smaller functions. Code snippet: ``` // Example of using meaningful variable names and commenting code $first_name = "John"; // Variable to store the first name $last_name = "Doe"; // Variable to store the last name // Example of breaking down a complex task into smaller functions function calculate_sum($num1, $num2) { return $num1 + $num2; } $result = calculate_sum(5, 10); // Calling the function to calculate the sum of two numbers echo $result; // Output the result ```