Description
string number_format (float number, int decimals, string dec_point, string thousands_sep)
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.
mt_getrandmax