How can one effectively troubleshoot issues with pre-set formulas in PHP for game development?

Issue: If pre-set formulas in PHP for game development are not working correctly, it may be due to syntax errors or incorrect logic within the formulas. To troubleshoot this, carefully review the code for any mistakes, test each component of the formula individually, and use debugging tools like echo statements to track the flow of data.

// Example of a pre-set formula with syntax errors
$health = 100;
$damage = 20;

// Incorrect formula calculation
$remaining_health = $health - $damage * 0.5; // Incorrect calculation due to missing parentheses

// Corrected formula calculation
$remaining_health = $health - ($damage * 0.5); // Corrected calculation with parentheses