What potential pitfalls should developers be aware of when working with float values in PHP?

When working with float values in PHP, developers should be aware of the potential pitfalls of floating-point precision errors. These errors can occur due to the way floating-point numbers are represented in binary format, leading to inaccuracies in calculations. To mitigate this issue, developers can use the PHP function round() to round float values to a specified number of decimal places.

$floatValue = 0.1 + 0.2;
$roundedValue = round($floatValue, 2);
echo $roundedValue; // Output: 0.3