PHP：用绝对域URL替换相对顶部URL“../”

Question

I want to convert relative URLs that starts with ../stuff/more.php to http://www.example.com/stuff/more.php in my RSS feed.

I used this PHP code to do so is the following:

$content = preg_replace("#(<\s*a\s+[^>]*href\s*=\s*[\"'])(?!http)([^\"'>]+)([\"'>]+)#", '$1http://www.example.com/$2$3', $content);

The result is wrong thought, it returns the URL like this

http://www.example.com/../stuff/more.php

Notice the ../ part hasn't been removed, please help!

So Basically..

This what I have: ../stuff/more.php

This is what I get (after running the code above): http://www.example.com/../stuff/more.php

This what I WANT: http://www.example.com/stuff/more.php

Answer 1

Adding (\.|\.\.|\/)* should work.

$content = preg_replace("#(<\s*a\s+[^>]href\s=\s*[\"'])(?!http)(../|../|/)*([^\"'>]+)([\"'>]+)#", '$1http://www.example.com/$3$4', $content);

Also, note $2$3 has been changed to $3$4

Edit:

Reduced to one alternative:

    $content = preg_replace("#(<\s*a\s+[^>]*href\s*=\s*[\"'])(?!http)(\.\.\/)*([^\"'>]+)([\"'>]+)#", '$1http://www.example.com/$3$4', $content);