What potential pitfalls should PHP developers be aware of when working with complex algorithms for quote calculations in a betting system?

When working with complex algorithms for quote calculations in a betting system, PHP developers should be aware of potential pitfalls such as precision errors when dealing with floating-point numbers. To mitigate this issue, developers should use PHP's built-in functions for precise calculations, such as `bcadd()`, `bcsub()`, `bcmul()`, and `bcdiv()`.

// Example of using bcadd() for precise addition
$number1 = '0.1';
$number2 = '0.2';
$sum = bcadd($number1, $number2, 2); // Result will be '0.3'
echo $sum;