What are the potential pitfalls of rounding a variable in PHP for further processing?

Rounding a variable in PHP can potentially introduce inaccuracies in calculations due to rounding errors. To avoid this issue, it is recommended to round the variable only when displaying the result, rather than rounding it for further processing.

// Store the variable without rounding for further processing
$number = 10.555;

// Perform calculations without rounding
$result = $number * 2;

// Display the rounded result
echo round($result, 2);