How to Round Down Decimals to Two Places in PHP?

Rounding Down Decimals to Two Places in PHP

Rounding down decimals to two places can be a common task when dealing with numerical data in PHP. Let's address the specific issue raised in the question.

The question states that using the number_format function doesn't provide the desired result, as it rounds the decimal up instead of down. Additionally, the substr function is not suitable because the number may be smaller than the desired number of decimal places.

To resolve this issue, the following approach can be used:

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

Firstly, the number is multiplied by 100, effectively shifting the decimal point two places to the right. Then, the floor function is applied, which rounds the result down to the nearest integer. Finally, the value is divided by 100 to shift the decimal point back two places to the left, resulting in a decimal number rounded down to two places.

For demonstration, let's apply this method to the value 49.955 provided in the question:

<code class="php">echo floor(49.955 * 100) / 100; // Output: 49.95</code>

This will round down 49.955 to 49.95, as required.

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