What are some best practices for handling rounding errors or edge cases when implementing custom rounding logic in PHP?

Rounding errors can occur when performing mathematical operations in PHP due to the inherent limitations of floating-point numbers. To handle rounding errors or edge cases when implementing custom rounding logic, it is recommended to use PHP's built-in functions like round(), ceil(), or floor(). Additionally, you can use the BCMath extension for arbitrary precision mathematics to perform accurate rounding calculations. 

// Example of using PHP's built-in round() function to handle rounding errors
$value = 10.555;
$roundedValue = round($value, 2);
echo $roundedValue; // Output: 10.56

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rounding errors edge cases custom rounding logic PHP implementation

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