Rounding and Formatting Numbers

By Angela Bradley, About.com Guide

The Floor() PHP function is used to always round down to the nearest whole number. The PHP function Floor () behaves identical to the MySQL use; even the largest decimal will always be rounded down.

<?php 
 echo floor(3.14159265); 
 // Value would be 3
 echo ceil(3.99999999); 
 // Value would be 3
 echo ceil(-3.14159265); 
 // Value would be -4
 ?> 

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• Round () - Rounding Numbers
• Ceil () - Always Rounding Up
• Floor () - Always Rounding Down
• Number_format () - Formatting your Numbers

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