What are some best practices for handling mathematical calculations in PHP scripts?

When handling mathematical calculations in PHP scripts, it is important to ensure accuracy and efficiency. One best practice is to use built-in PHP functions for mathematical operations rather than writing custom code. Additionally, it is recommended to properly handle errors and edge cases to avoid unexpected results.

// Example of using built-in PHP functions for mathematical calculations

// Addition
$sum = 5 + 3;

// Subtraction
$diff = 10 - 4;

// Multiplication
$product = 2 * 6;

// Division
$quotient = 12 / 3;

// Modulus
$remainder = 10 % 3;

echo "Sum: $sum, Difference: $diff, Product: $product, Quotient: $quotient, Remainder: $remainder";