如何舍入到小数点后两位PHP

Question

我想在PHP中将数字四舍五入到小数点后两位.

PHP代码:

$bmi = ($form_state[values][submitted][1] * 703) / 
    ($form_state[values][submitted][10] * $form_state[values][submitted][10]);
$form_values['submitted'][11] = $bmi;
$form_values['submitted_tree'][11] = $bmi;

舍入变量的最佳方法是什么$bmi？

Answer 1

round ($your_variable, 2)

http://us2.php.net/manual/en/function.round.php