Format Numbers with Comma as Per Indian System

To format a number with commas as per Indian System, use the following function

<?php 
function format($x)
{
	$x=str_pad($x,12,'X',STR_PAD_LEFT);
	$x=substr($x,0,1).",".substr($x,1,2).",".substr($x,3,2).",".substr($x,5,2).",".substr($x,7,2).",".substr($x,9,3);
	$x=str_replace('X,',"",$x);
	$x=str_replace('X',"",$x);
	if($x=="")
	{
		$x="0";
	}
	return $x;
}
?>