Parse Tweets when they are fetched from twitter such that links, user mention, & hashtags are linked & are not just text.

PHP: parse tweets (replace links,hashtags,& user mentions)

private function parse_tweet($text){

    //links
    $text = preg_replace(
            '@(https?://([-\w\.]+)+(/([\w/_\.]*(\?\S+)?(#\S+)?)?)?)@',
             '<a href="$1">$1</a>',
            $text);

    //users
    $text = preg_replace(
            '/@(\w+)/',
            '<a href="http://twitter.com/$1">@$1</a>',
            $text);

    //hashtags
    $text = preg_replace(
            '/\s+#(\w+)/',
            ' <a href="http://search.twitter.com/search?q=%23$1">#$1</a>',
            $text);

    return $text;
}

hashtags are now on url https://twitter.com/hashtag/$1