(PHP 4, PHP 5)
number_format вЂ” Format a number with grouped thousands
number_format() returns a formatted version of number . This function accepts either one, two or four parameters (not three):
If only one parameter is given, number will be formatted without decimals, but with a comma (",") between every group of thousands.
If two parameters are given, number will be formatted with decimals decimals with a dot (".") in front, and a comma (",") between every group of thousands.
If all four parameters are given, number will be formatted with decimals decimals, dec_point instead of a dot (".") before the decimals and thousands_sep instead of a comma (",") between every group of thousands.
Only the first character of thousands_sep is used. For example, if you use bar as thousands_sep on the number 1000, number_format() will return 1b000.
Example#1 number_format() Example
For instance, French notation usually use two decimals, comma (',') as decimal separator, and space (' ') as thousand separator. This is achieved with this line :
$number = 1234.56;
// english notation (default)
$english_format_number = number_format($number);
// French notation
$nombre_format_francais = number_format($number, 2, ',', ' ');
// 1 234,56
$number = 1234.5678;
// english notation without thousands seperator
$english_format_number = number_format($number, 2, '.', '');
See also: money_format(), sprintf(), printf() and sscanf().