phpformattingnumbersroundingnumber-formatting

Show a number to two decimal places


What's the correct way to round a PHP string to two decimal places?

$number = "520"; // It's a string from a database

$formatted_number = round_to_2dp($number);

echo $formatted_number;

The output should be 520.00;

How should the round_to_2dp() function definition be?


Solution

  • You can use number_format():

    return number_format((float)$number, 2, '.', '');
    

    Example:

    $foo = "105";
    echo number_format((float)$foo, 2, '.', '');  // Outputs -> 105.00
    

    This function returns a string.