.htaccess无法正常工作

Question

I'm quite newbie in mod_rewrite and trying to do 'friendly URL's' but there is some problem that I can't figured it out. So, I have categories and the url is

/pic.php?cat_id=1
After rewrite it I get this url

/pic/1

When category load there is 1 image and button 'Next'. When I click on 'Next' my URL is

pic.php?cat_id=11&id=20
After rewrite
pic/1/2

And here Is the problem. When I click 'Next' forn next image the page is refreshed, the image is sam and the url became

pic/1/1/2

And after every 'Next' click put one more /1/ Here is the .htaccess that I use right now

Options +FollowSymlinks
RewriteEngine on

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

RewriteRule ^pic/([0-9]+)(/([0-9]+))? pic.php?cat_id=$1&line[0]=$3 [L,QSA]
RewriteRule ^pic/([0-9]+)? pic.php?cat_id=$1 [L,QSA]

And here are both links

<a href="pic/'. $res['cat_id'] .'"> <--- for selecting category
<a href="'.$cat_id.'/'.$line[0].'"> <--- next image in that category

And if I choose another category while I'm in some category my URL become

pic/1/2/pic/2/ <---put other category url next to the current category

What is wrong here?

Answer 1

试试这个代码：

<a href="pic/'. $res['cat_id'] .'/"> <a href="../../pic/'.$cat_id.'/'.$line[0].'">