.htaccess重写规则，正则表达式不起作用，返回404

Question

I tried to resize an image with timthumb library.
I can use it directly via the following URL

http://localhost/study/server/resize/thumb.php?src=http://localhost/study/server/product/1/1/orig-1.jpg&w=160&h=130

and it works fine.

But when I rewrite my url like this

http://localhost/study/server/resize/160x130/r/product/1/1/orig-1.jpg

and add

<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteBase /
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteCond %{REQUEST_URI} !^/(resize) [NC]
    RewriteRule ^resize/(.*)x(.*)/r/(.*) resize/thumb.php?src=http://localhost/study/server/$3&h=$2&w=$1&c=1
</IfModule>

unfortunately this rule return 404 error

Answer 1

Use this RewriteRule

RewriteRule ^study/server/resize/([0-9]+)x([0-9]+)/r/product/([0-9]+)/([0-9]+)/(.*)$ 
/study/server/resize/thumb.php?src=/study/server/product/$3/$4/$5&w=$1&h=$2 [L]

group 1 matches the width, zero or more digits
group 2 matches the height, zero or more digits
group 3 matches the first digit after /product/, one digit, you can modify if needed
group 4 matches the second digit after /product/, one digit, you can modify if needed
group 5 matches the filename

This condition

RewriteCond %{REQUEST_URI} !^/(resize) [NC]

is not needed