How to Format a Number to Two Decimal Places in PHP?

How to Display a Number with Two Decimal Places in PHP

In PHP, displaying a number with two decimal places can be achieved using the appropriate formatting functions.

To round a string representing a number to two decimal places, consider the following code snippet:

$number = "520"; // Assumed to be a string from a database

$formatted_number = round_to_2dp($number);

echo $formatted_number;

The objective is to define the round_to_2dp() function to perform the necessary rounding.

Function Definition for round_to_2dp():

One approach to achieve this is by employing the number_format() function:

function round_to_2dp($number) {
  return number_format((float)$number, 2, '.', '');
}

In this implementation:

• The number is first cast to a float to ensure accurate calculations.

• number_format is utilized with the following parameters:

  • $number: The number to be formatted.
  • 2: Specifies two decimal places.
  • . and '': Denote the decimal separator and thousands separator (which is empty in this case).
• The function returns a string representing the rounded number.

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