Getting mod_rewrite to pass $_GET params?

There's a couple other questions on this same topic on here that I've read, but mine is slightly different. I'm trying to do a very basic mod_rewrite:

RewriteEngine on
RewriteRule ^go/([^/\.]+)/?$ /go.php?page=$1

go.php looks like this:

<?php
ini_set('display_errors',1);
if(isset($_GET['page'])){
    echo 'page='.$_GET['page'];
}else{
    echo 'oh shnizzle!';
}
?>

Now, whe开发者_如何学Gon I go to /go/someword in my browser, the $_GET param "someword" IS NOT passed along, and I get the message "oh shnizzle!" every time. What are possible reasons I'm not able to pass any $_GET params through mod_rewrite?

You probably have MultiViews turned on. Add this to the top of your .htaccess file:

Options -MultiViews

And the problem should go away, hopefully.

To elaborate a little on what's going on if this is the case, your URL /go/someword points to a non-existent resource, so MultiViews transforms it into /go.php, which does exist. When this happens, the /somewhere bit is passed to PHP as $_SERVER['PATH_INFO'], but go.php doesn't match your rewrite rule, so the rewrite is not performed to write that query string.

You need the QSA (query string append) flag on your rewrite rule.

RewriteEngine on
RewriteRule ^go/([^/\.]+)/?$ /go.php?page=$1 [QSA]

A few ideas...

RewriteEngine On
RewriteCond %{SCRIPT_FILENAME} !-f
RewriteCond %{SCRIPT_FILENAME} !-d
RewriteRule ^/go/([^/\.]+)/?$ /go.php?page=$1 [QSA]

This should stop the mod_rewrite rules from being triggered if a valid page, script or directory is requested. It will also append any existing Query Strings.

In the go.php file, I would have the following:

<?php
ini_set('display_errors',1);
echo '<b>$_GET Variables</b><pre>';
var_dump( $_GET );
echo '</pre>';
?>

That way, rather than looking for a specific variable (at least until it behaves itself) you can see exactly what GET variables are being passed to the script.