What is the purpose of number_format in PHP?

2 years ago
William Carter
1 minute

The number_format function is used to format numbers, it can convert a number to a string with thousand separators, decimal points, and a specified number of decimal places.

The syntax of the number_format function is as follows:

string number_format(float $number, int $decimals = 0, string $decPoint = “.”, string $thousandsSep = “,”)

Explanation of Parameters:

  1. $number: the number that needs to be formatted
  2. $decimals: specifies the number of decimal places to be kept, defaulting to 0.
  3. $decPoint: Specify the character for the decimal point, default is “.”
  4. $thousandsSep: Specifies the character for the thousands separator, default is “,”.

示例：The teacher emphasized the importance of completing homework on time.

$number = 12345.6789;
echo number_format($number, 2); // 输出：12,345.68

$number = 123456.789;
echo number_format($number, 2, ",", "."); // 输出：123.456,79

In the above example, the number_format function formats the numbers into a string with thousand separators, as specified with the desired decimal places, decimal point, and thousand separators.

bannerAds