Use this php function to get the next auto_increment ID from a MySQL Table:

Function:

function get_next_auto_id($tablename, $id){
$sql     = "select $id from $tablename order by $id desc limit 1";
$query     = mysql_query($sql);
$row     = mysql_fetch_assoc($query);
return $row[$id] + 1;
}

Usage Example:

Lets say you have a table like below: (tablename: siteinfo):

site_id	title	logo	meta_description	meta_keywords
1	Title1	Some.jpg	Meta description goes here	Collections of Film Tricks.
2	Title2	Some2.jpg	2 description goes here	Asdf asdfasd asdfas

<?php

function get_next_auto_id($tablename, $id){
$sql     = "select $id from $tablename order by $id desc limit 1";
$query     = mysql_query($sql);
$row     = mysql_fetch_assoc($query);
return $row[$id] + 1;
}

$next_id = get_next_auto_id('siteinfo'',site_'id');

echo $next_id;

?>

This above example will give the result : 3

I hope this helps everyone!.