Can robots reach my site? Facebook can't! Custom URL controller in PHP

Question

I'm having trouble with getting Facebook Like to accept my website URL's. Using the the Facebook developed tool "URL Linter", I have found out that Facebook get's the following error: "Website Inaccessible The page at http://www.domainname.com/categories/blouses.html could not be reached."

I'm running a website that's uses a lot of rewrite rules created "on-the-fly" by a PHP script. When a .html document is requested, I use htaccess to parse the request to a PHP file.

RewriteRule ^(.*).html$  url_controller.php [L]

The url-controller.php contains the following code:

require_once $_SERVER['DOCUMENT_ROOT'].'/lib/config.php';

list($url, $ext) = explode('.html', substr(mysql_real_escape_string($_SERVER['REQUEST_URI']), 1));
list($parent, $child) = explode('/', $url);

$get_product = mysql_query("SELECT p.id FROM product_languages AS pl INNER JOIN products AS p ON pl.product_id = p.id INNER JOIN shop_products AS sp ON sp.product_id = p.id && sp.shop_id = ".$GLOBALS['site_id']." WHERE pl.url_key = '{$url}' && pl.locale = '{$_SESSION['language']}' LIMIT 0,1") or die(mysql_error());

if(mysql_num_rows($get_product)) {
    require_once './pages/view_product.php';
    exit;
}

$get_parent = mysql_query("SELECT c.id FROM categories AS c INNER JOIN shop_categories AS sc ON sc.category_id = c.id && sc.shop_id = ".$GLOBALS['site_id']." INNER JOIN category_languages AS cl ON cl.category_id = c.id && cl.url_key = '{$parent}' && cl.locale = '{$_SESSION['language']}' WHERE parent = 1 && active = 1 LIMIT 0,1");
$get_child = mysql_query("SELECT c.id FROM categories AS c INNER JOIN shop_categories AS sc ON sc.category_id = c.id && sc.shop_id = ".$GLOBALS['site_id']." INNER JOIN category_languages AS cl ON cl.category_id = c.id && cl.url_key = '{$child}' && cl.locale = '{$_SESSION['language']}' WHERE parent = 0 && active = 1 LIMIT 0,1");
if(mysql_num_rows($get_parent) && mysql_num_rows($get_child)) {
    require_once './pages/view_catalog.php';
    exit;
}

$get_cms_page= mysql_query("SELECT p.id FROM cms_pages AS p INNER JOIN shop_cms_pages AS s ON p.id = s.page_id INNER JOIN cms_page_languages AS l ON p.id = l.page_id WHERE s.shop_id = '{$GLOBALS['site_id']}' AND l.url_key = '{$url}' AND p.active = 1 AND l.locale = '{$_SESSION['language']}' LIMIT 0,1") or die(mysql_error());
if(mysql_num_rows($get_cms_page)) {
    require_once './pages/cms_page.php';
    exit;
}

$get_rule = mysql_query("SELECT new_url, status FROM url_rewrite WHERE shop_id = ".$GLOBALS['site_id']." && old_url = '".str_replace('Webshop/','',$url)."' && locale = '{$_SESSION['language']}' LIMIT 0,1") or die(mysql_error());
$fetch_rule = mysql_fetch_array($get_rule);

if(mysql_num_rows($get_rule)) {

     if($fetch_rule['status'] == 301) {
        header ("HTTP/1.1 301 Moved Permanently");
        //fix redirect to /
        if($fetch_rule['new_url'] == '/') {
        header ("Location: ".$fetch_rule['new_url']);
    } else {
        header ("Location: /".$fetch_rule['new_url'].".html");
    }
    exit;
}
elseif($fetch_rule['status'] == 302) {
    header ("Location: /".$fetch_rule['new_url'].".html");
    exit;
}
}

//IF WE GET TO THIS POINT; IT'S NOT BEEN POSSIBLE TO FIND THE REQUESTED URL ANYWHERE IN THE CATALOG
header("HTTP/1.0 404 Not Found");
require_once './pages/error_404.php';
exit;

I'm having a hard time seeing what I'm doing wrong - and even worse, I've started to consider whether Google could also be having trouble reaching my site?

I hope someone can aid me with their experience and knowledge :)

Thanks in advance

Answer 1

If you go to Google Webmaster Tools you will be able to fetch your page as GoogleBot. That will tell you if Google has a problem with it. Your code seems fine, but I did not take much time to look over it carefully.