What are some best practices for ensuring accurate calculations in PHP?

To ensure accurate calculations in PHP, it is important to handle floating-point arithmetic with care due to precision issues. One common approach is to use the BCMath extension in PHP, which provides arbitrary precision mathematics functions for more accurate calculations. 

// Example of using BCMath extension for accurate calculations
$number1 = '1.23456789';
$number2 = '9.87654321';

$sum = bcadd($number1, $number2, 8); // Adding two numbers with 8 decimal places precision

echo $sum;

Keywords

floating point precision type casting round function BCMath extension error handling

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