What are some best practices for handling decimal calculations in PHP to avoid rounding errors?

When working with decimal calculations in PHP, it's important to use the appropriate functions and data types to avoid rounding errors. One common solution is to use the `bcmath` extension, which provides arbitrary precision arithmetic functions for working with decimal numbers in PHP. By using these functions, you can perform accurate calculations without losing precision due to rounding errors. 

// Using the bcmath extension for accurate decimal calculations
$num1 = '0.1';
$num2 = '0.2';

$sum = bcadd($num1, $num2, 10); // Adding two decimal numbers with precision set to 10
echo $sum; // Output: 0.3

Keywords

decimal calculations PHP rounding errors precision floating point arithmetic

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