PHP decimal Two bits reserved

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Three functions are used to keep the decimal number after N bits, and then a simple introduction to three functions:

1, Number_format

Echo Number_format ("5000000"). " <br> "; Echo Number_format (" 5000000 ", 2)." <br> "; Echo Number_format (" 5000000 ", 2,", ",". ");

This function is mainly implemented by: Thousands of bits are grouped into formatted data.

Output results

5,000,000
5,000,000.00
5.000.000,00

2, sprintf

$num = 123; $data =sprintf ("%.2f", $num); Echo $data;

The result is:

123.00

3, round

$num 1 = 123.1267$data1 = Round ($num 1, 2), $num 2 = 123$data2 = Round ($num 2, 2); Echo $data 1. " <br> "Echo $data 2

The result is:

123.13

123

This function will not automatically help you if the decimal point is less than two bits.