What are some effective strategies for debugging PHP code that involves calculations?

When debugging PHP code that involves calculations, one effective strategy is to use print statements to display the values of variables at different points in the code. This can help identify where the calculations may be going wrong. Additionally, using a debugger tool like Xdebug can allow you to step through the code line by line and see the values of variables in real-time.

// Example PHP code snippet demonstrating the use of print statements for debugging calculations

$number1 = 10;
$number2 = 5;

// Display the values of variables before performing calculations
echo "Number 1: " . $number1 . "\n";
echo "Number 2: " . $number2 . "\n";

// Perform the calculation
$result = $number1 + $number2;

// Display the result of the calculation
echo "Result: " . $result . "\n";