What could be causing inaccuracies in PHP when subtracting two numbers?

When subtracting two numbers in PHP, inaccuracies may occur due to floating-point precision issues. To solve this problem, you can use the `bcsub` function in PHP, which performs arbitrary-precision arithmetic. 

$num1 = '10.5';
$num2 = '3.2';

$result = bcsub($num1, $num2, 2);

echo $result; // Output: 7.30

Keywords

PHP subtraction precision floating point rounding

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