Creating a 'Page Top' link / anchor

[Website Rob]

Would like to create a link at the bottom of each page for "Page Top". As the script puls in URLs from various places, the normal HTML code will not work -- other than on the Home page. Once you go into a Catagory and start getting product IDs added, it gets a bit tricky.

<a href="' . $_GET['main_page'] . '#ptop" title="Go to top of this Page">Page Top</a> 

Just focusing on the code required within the '<a /a>' the above is what I have so far. My coding is not up to snuff enough to know which coding is required, to pull in the rest of the required URL.

Can anyone point me in the right direction for the rest of the code needed?

[samad64]

if you wanted to.. you could just put this:

<a href="#ptop" title="Go to top of this Page">Page Top</a>

and it should work, assuming you have an anchor at the top of the page (like in the header). it should automatically tag the url you're at with the #ptop

so.. if you're at mydomain.com/index.php ... it will show mydomain.com/index.php#ptop

if you're at mydomain.com/index.php?main_page=shippinginfo , it will show mydomain.com/index.php?main_page=shippinginfo#ptop

[Website Rob]

One would think that but not so.

[Website Rob]

Actually, to correct my last post, the 'id' tag does work for basic pages such as described. The problem comes in when you are in a Catagory and/or on a specific Product page.

Once 'product_info' or 'cPath' gets put into the URL, the 'page top' link no longer works.

[tkroh]

...assuming you have an anchor at the top of the page (like in the header).

One would think that but not so.

Is that assumption correct?

[Website Rob]

Yes. This was confirmed earlier, "the 'id' tag does work for basic pages".

[paulm]

A way it really* works for me on a "similar to Zen Cart site" is:

<a href="<?php echo $_SERVER['REQUEST_URI']; ?>#top">Top</a>

(*really => without reloading the page when clicking the link)

[paulm]

And now that I think of it, this looks like it invokes a security problem
Doesn't it?

[Website Rob]

As it is only an 'echo' statement I do not see much of a security breach, that any other page would not have as well.

Also, thank you for posting, Paul. Your code solved my problem.

[paulm]

Hi Rob,

glad to hear that it works for you too :-)
(I guess relative url's by default are not made to work with query strings, which seems more or less logical)

The security issue I was thinking of is that $_SERVER['REQUEST_URI'] contains the query string, and the query string is user input. And, if echoed back, I would think this allows cross site scripting attacks.

So I think it's better to use:

<a href="<?php echo zen_output_string_protected($_SERVER['REQUEST_URI']); ?>#top">Top</a>