img code off for guests vb 3.0.7

[-=Sniper=-]

I requested this before but I was told it could be a problem because of post cache. So had a go my self and came up with this. It displays links only for guests while members can choose to view images or not.

I wanted to do this, so to speed up the site for users with slow connections. Wile broadband users can enable it.

So I just wanted to know would this cause any problems with the post cache or add extra work for the server?

PHP Code:

function handle_bbcode_img($bbcode, $dobbimagecode)
{
    global $vboptions, $bbuserinfo;

    if($dobbimagecode AND ($bbuserinfo['userid'] == 0 OR $bbuserinfo['showimages']))
    {
        // do [img]https://vborg.vbsupport.ru/[/img]
        $bbcode = preg_replace('#\[img\]\s*(https?://([^<>*"' . iif(!$vboptions['allowdynimg'], '?&') . ']+|[a-z0-9/\\._\- !]+))\[/img\]#iUe', "handle_bbcode_img_match('\\1')", $bbcode);
    }
    $bbcode = preg_replace('#\[img\]\s*(https?://([^<>*"]+|[a-z0-9/\\._\- !]+))\[/img\]#iUe', "handle_bbcode_url('\\1', '', 'url')", $bbcode);

    return $bbcode;
} 


to

PHP Code:

// ###################### Start bbcodeparseimgcode #######################
function handle_bbcode_img($bbcode, $dobbimagecode)
{
    global $vboptions, $bbuserinfo;

    if($dobbimagecode AND ($bbuserinfo['showvbcode'] == 1 AND $bbuserinfo['showimages']))
    {
        // do [img]https://vborg.vbsupport.ru/[/img]
        $bbcode = preg_replace('#\[img\]\s*(https?://([^<>*"' . iif(!$vboptions['allowdynimg'], '?&') . ']+|[a-z0-9/\\._\- !]+))\[/img\]#iUe', "handle_bbcode_img_match('\\1')", $bbcode);
    }
    $bbcode = preg_replace('#\[img\]\s*(https?://([^<>*"]+|[a-z0-9/\\._\- !]+))\[/img\]#iUe', "handle_bbcode_url('\\1', '', 'url')", $bbcode);

    return $bbcode;
} 


thanks