Menu created with MySQL only works within website not outside - php

Question

I hope somebody can help me, because i got an menu that is auto generated via my MySQL db.
Because i got the menu to work inside the website and with that i mean it works with "test.dk/about" but the a href is empty when it's going out of the website like "http://google.com"...
btw it's just a very simple UL LI menu no dropdown or something.
Here is my script
static function build_menu()
{
$result = mysql_query("SELECT * FROM menu");
$menu = array();
while ($row = mysql_fetch_assoc($result)) {
if ($row["is_external"]) {
$url = $row["url"];
} else if (empty($row["is_external"])) {
$url = get_page_url($row["page_id"]);
}
$menu[] = array("name" => $row["name"], "page_id" => $row["page_id"], "is_external" => $row["url"], "url" => $url);
}
return $menu;
}
static function get_page_url($page_id)
{
$result = mysql_query("SELECT view_id FROM page WHERE id = '$page_id'");
$result = mysql_fetch_assoc($result);
$view_id = $result["view_id"];
$result = mysql_query("SELECT listen_path FROM view WHERE id = '$view_id'");
$result = mysql_fetch_assoc($result);
$listen_path = $result["listen_path"];
return $listen_path;
}
static function render()
{
$result = mysql_query("SELECT * FROM menu"); ?>
<div class="menu">
<ul><?php while ($item = mysql_fetch_assoc($result)) { ?>
<li><?php echo $item["name"] ?>
</li> <?php } ?></ul></div><?php
}
How can i fix it, so it works both internal and external?
<div class="menu"> <ul> <li>Homepage</li> <li>About</li> <li>Develop</li> <li>Support</li>
This should be <li>Support</li>; </ul> </div>

Answer 1

You only check for an external link in the function build_menu(), but this function isn't called anywhere from your render() function.
The render() function only calls get_page_url() which doesn't distinguish between internal and external links.

Answer 2

Href parameter of external URL must start with protocol declaration, so with "http://" in your case.
So change your code in condition inside the function "build_menu", if the URL is external, add "http://" to it, something like this:
$url = 'http://'.$row["url"];

Answer 3

I got it work after a while!
I simply just created an If else statement in the render function
static function render(){
$menu_items = self::get();
?><div class="menu"><ul><?php while ($item = mysql_fetch_assoc($menu_items)) { ?>
<li><a href="<?php
if(empty($item["is_external"]))
{
echo self::get_page_url($item["page_id"]);
}
else if($item["is_external"] = 1)
{
echo $item["url"];
}
?>"><?php echo $item["name"] ?></a>
</li> <?php } ?></ul></div><?php
}