How to Round Decimals Down to Two Decimal Places in PHP?

Rounding Decimals Down to Two Places in PHP

In PHP, rounding down a decimal to two decimal places can be challenging. While functions like number_format() round to the nearest point, methods like substr() fail to account for variable digit counts.

To achieve this rounding precision, consider the following solution:

<code class="php">$number = 49.955;
$rounded = floor($number * 100) / 100;

echo $rounded; // Output: 49.95</code>

Explanation:

1. Multiply the number by 100 to shift the decimal point two places to the right.
2. Use floor() to truncate the floating-point number, thereby rounding down any fractions.
3. Divide the result by 100 to bring the decimal point back to its original position.

This method ensures accurate rounding down to two decimal places, regardless of the input number's starting value.

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