What are some recommended PHP libraries or packages for handling large numbers or precision arithmetic?

When dealing with large numbers or requiring high precision arithmetic in PHP, the built-in functions may not be sufficient. In such cases, using external libraries or packages specifically designed for handling large numbers can be more efficient and accurate. Libraries like BCMath or GMP provide functions for arbitrary precision arithmetic, making it easier to work with large numbers or maintain high precision in calculations.

// Example of using the BCMath library for handling large numbers
$num1 = "123456789012345678901234567890";
$num2 = "987654321098765432109876543210";

$sum = bcadd($num1, $num2);
$diff = bcsub($num1, $num2);
$product = bcmul($num1, $num2);
$quotient = bcdiv($num1, $num2);

echo "Sum: $sum\n";
echo "Difference: $diff\n";
echo "Product: $product\n";
echo "Quotient: $quotient\n";