propogating vars in a URL

[Anon]

At the moment on my site I have a PHP variable which changes the content of the page when it is loaded up. If I want to link to a relative page within my site and keep that variable the same I use something like <a href="page.php?<?php echo $var?>"> and that works fine.

However, what I want to know is - is there any way I can propogate the variable in the URL on relative links without having to echo the variable to the page (and having to write that rather clumsy href tag)?

Cheers,
Strawpedo

[vsego]

I use my own functions for this:

createLink($url, $desc, $hint = "") - returns <a href...> string ($hint is JavaScript hint for status bar - same as $url or $desc if not given when calling function)

outLink($url, $desc, $hint = "") {
echo createLink($url, $desc, $hint);
}

This is nice, because you can add additional fetures to createLink(). I.e. I often add "print=1" (for "printer friendly" pages):

function createLink(...) {
global $print;
if ($print && !ereg("print=1", $url)) $url .= "?print=1";
...
}

This is just a sketch. Real function is more complext (determines if it has to add "?" or "&" before "print=1", check some other variants, removes "print=1" from url, so that I have way of defining url without it,...)

[[deleted]]

There are three methods to propagate a var:

1. Print it in the URL.

2. Put it in a cookie.

3. Put it into a session.

4. Is the easiest, especially if you make a small function for it.

5. Can only be used if the var is the same for all the links on the same page, and all linked pages know which var to look for.

6. Can only be used is the var is the same for all links and all linked pages use PHP and all linked pages know which var to look for.

[vsego]

(2&3) Be careful, some browser don't support cookies or have them turned off.

[Anon]

Ah! Of course! I can stick it in a session variable and use the URL propogation as optional. That works for me 🙂

Cheers!