Fix links addresses on websites HTML code

Question

Hello, i have been working on one tool lately. It grabs all the link addresses from the website.

My problem is that links in html code sometimes is different:

• /index.php
• index.php
• http://www.website.com/index.php

I need to make all links same:

/index.php                       -> http://www.website.com/index.php
index.php                        -> http://www.website.com/index.php
http://www.website.com/index.php -> http://www.website.com/index.php

Thanks for help.

Answer 1

Welcome to GoogleOverflow.com.

Here is the complete tutorial for parsing links in HTML using PHP and regex: http://www.the-art-of-web.com/php/parse-links/

Answer 2

Here's a function which will return the absolute URL given the base (current) URL and a relative one.

Answer 3

You need to check for the existence of a base tag. If you find it, it specify the base URL (otherwise, the base URL is the same path the browser points to, up to the last /).

Answer 4

Using preg_replace to fix relative urls

Requires:
$domain = the subject sites domain
$path = the document or string you are looking for relative links with in.

Returns:
$url = the doument or string with the links within it converted to proper urls with the domain given.

Code:

$url = preg_replace('<a\shref="([\/\?\w\.=\&]+)"([\s]rel="(\w+)")*>/', '<a href="http://{$site_domain}$1" rel="$3">' $path)  

good luck, let me know how it goes.