writing 2 or 3 or more numbers after comma

[Anonymous]

hi friends.
i calculate a float number.
after calculating the float variable have the value after comma 10 numbers.
for example:61.9047619048
but when i writing it to screen only i want to write 2.
for example:61.90
how can i solve this?

 

[Alexej Kubarev]

<?php
$var = 6,32155487961358;
echo round($var,3);
?>

explanation: use round(float $number [, int $precision]);