PHPSESSID in your URL? Learn to 301 redirect them with PHP
I’m doing some work on a site which has like 4,500 pages indexed with a PHPSESSID in the URL, causing some major duplicate content problems. I got the server admin to disable the PHPSESSID’s by adding the following to the vhost config:
[code]php_value session.use_trans_sid 0
php_value session.use_only_cookies 1[/code]
I also wanted Google to get a clean URL when it decided to spider one of the old URL’s again, and didn’t have access to mod_rewrite, so I redirected them with some PHP. The solution is quite simple:
[code]if (isset($_GET[‘PHPSESSID’])) {
$requesturi = preg_replace(‘/?PHPSESSID=[^&]+/’,””,$_SERVER[‘REQUEST_URI’]);
$requesturi = preg_replace(‘/&PHPSESSID=[^&]+/’,””,$requesturi);
header(“HTTP/1.1 301 Moved Permanently”);
header(“Location: http://”.$_SERVER[‘HTTP_HOST’].$requesturi);
exit;
}[/code]
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Hi!
Where did you change/put that code exactly? Where is the “vhost config”?
thanx a lot!
Hi, thanks für this easy to use solution.
I modified the regexp code:
$requesturi = preg_replace(‘/[.|?|&]PHPSESSID=[^&]+/’,””,$_SERVER[‘REQUEST_URI’]);
PHPSESSID can’t be used for that.
but try on you header :
And how to stop WordPress and other scripts from creating cookies with PHPSESSID? I don’t see their use and they are only wasted bandwidth.
Very nice feature! I solved the prob really quick!
But by using the redirection you will loose all data stored in sessions, don’t you?
I got this problem:
Warning: preg_replace() [function.preg-replace]: Compilation failed: nothing to repeat at offset 0 in …
and solved it like that:
$requesturi = preg_replace(‘/&PHPSESSID=[^&]+/’,””,$_SERVER[‘REQUEST_URI’]);
$requesturi = preg_replace(‘/PHPSESSID=[^&]+/’,””,$requesturi);
hi joost
i am having the same problem here. since i dont know anything about coding i wanted to ask you if i have to place the second code you provided in this post in the php.ini file as well…thanks!
Thanks for sharing. Very nice trick :)
Thanks for it. Very useful. But there is any solution with PhP to leave previos url when page redirect to new page?
Short and sweet. I really have problems with Session-IDs in WordPress. I will try your hint! But I really wonder, that there is no wordpress plugin for the redirection of session-id-spamed urls… should not be too difficult…
no probs, I just know they don’t like it when you link to a local mirror :)
Ah damn, sorry for that one. PHP.net automatically redirects to the Dutch version, so I didn’t notice it.
very true Arjan, thx! (and sorry, I edited your comment to change the link to php.net instead of nl.php.net :) )
Thanks for sharing this Joost. Note that if you haven’t access to the ini files, this parameters can set by using the ini_set function.