2 decimal numbers in php?

For example:

(a)123 / (b)1000开发者_如何学C = (c)0,123

echo c must be 0,12

How can this be done ?

Use round(), sprintf() or number_format().

Examples:

<?php
$res = 123/1000;
printf('%.2f', $res);
echo round($res, 2);
echo number_format($res, 2);
?>

Use number_format http://php.net/number_format

Using sprintf() can be a way to do that.