Help redirecting old urls

Until last month i was using a 3rd party cms for my site. After 2 months of work i managed to write from scratch my own custom cms as a vb product. I managed to preserve most of the urls but i had to change some. So i need help to redirect them. If it was 1-2 i wouldn't care but we talk about 11000 indexed links by yahoo and google. I plan to use vbseo functions for the cms in the future but it will take some time (study vbseo) as i plan to use the page titles for the ulrs rathen than using the easy way page.php?id=xx => page-xx.html.

Anyway...

Example old to new
plug.php?e=terms => terms.php
plug.php?e=gpudb => gpudb.php

When it comes to htaccess i suck so i made a small php script to redirect the old urls to the new ones, with adding header 301.

file plug.php

PHP Code:

<?PHP

$url = $_SERVER['REQUEST_URI'];
$parsed = parse_url($url);

parse_str($parsed['query'], $output);
header("HTTP/1.1 301 Moved Permanently");
switch($output['e'])
{
    case 'terms':

        if(!empty($output['ltr']))
        {
             header("Location: http://www.3dacc.net/terms.php?ltr=".$output['ltr']);
        }
        elseif(!empty($output['item']))
        {
            header("Location: http://www.3dacc.net/terms.php?item=".$output['item']);
        }
        else
        {
            header("Location: http://www.3dacc.net/terms.php");
        }
    break;

    case 'startupdb':
        if(!empty($output['ltr']))
        {
             header("Location: http://www.3dacc.net/startup.php?ltr=".$output['ltr']);
        }
        elseif(!empty($output['item']))
        {
            header("Location: http://www.3dacc.net/startup.php?item=".$output['item']);
        }
        else
        {
            header("Location: http://www.3dacc.net/startup.php");
        }
    break;
    
    case 'gpudb':
    case 'revdb':
    
        if(!empty($output['series']))
        {
             header("Location: http://www.3dacc.net/gpudb.php?series=".$output['series']);
        }
        elseif(!empty($output['id']))
        {
            header("Location: http://www.3dacc.net/gpudb.php?id=".$output['id']);
        }
        else
        {
            header("Location: http://www.3dacc.net/gpudb.php");
        }
    break;    

    default:
        header("Location: http://www.3dacc.net");
    break;
}
?>

Everything works fine but i wonder about search bots, is it a good enough or do i need you to help me with htaccess ???

Thanks in advance

Hello,

that should be fine. It doesn't matter whether redirect is performed via .htaccess or in PHP script, important is only to send correct HTTP code and target URL.