Extract URLs from text in PHP

Question

I have this text:

$string = \"this is my friend\'s website http://example.com I think it is coll\";

How can I extract the link into another

Answer 1

I tried to do as Nobu said, using Wordpress, but to much dependencies to other WordPress functions I instead opted to use Nobu's regular expression for preg_match_all() and turned it into a function, using preg_replace_callback(); a function which now replaces all links in a text with clickable links. It uses anonymous functions so you'll need PHP 5.3 or you may rewrite the code to use an ordinary function instead.

]+(?:\([\w\d]+\)|([^[:punct:]\s]|/))#';
    return preg_replace_callback($regex, function ($matches) {
        return "{$matches[0]}";
    }, $text);
}