rounding fractions on PHP

Part of my study on PHP; I found out that i can easily round fractions up or down, using function ceil and floor. Good thing i was able to read the manual again, hehe.

Read here:
http://ph.php.net/manual/en/function.ceil.php
http://ph.php.net/manual/en/function.floor.php


~~
echo ceil(4.3); // 5
echo ceil(9.999); // 10
echo floor(4.3); // 4
echo floor(9.999); // 9
~~