Replace links with html links.

rawLinkToHtmlLink.php

<?php

/**
 * This function replaces all of the links in $text with with html links.
 *
 * @param string $text
 * @param string $target ("_blank", "_self", "_parent", "_top", framename)
 *
 * @return string
 */
function toLink( $text, $target = "" )
{
    $pattern  = '#\b(([\w-]+://?|www[.])[^\s()<>]+(?:\([\w\d]+\)|([^[:punct:]\s]|/)))#';
    $callback = function($matches) use ($target){
        $url  = $matches[0];
        $text = parse_url($url, PHP_URL_HOST) . parse_url($url, PHP_URL_PATH).(parse_url($url, PHP_URL_QUERY) ? "?".parse_url($url, PHP_URL_QUERY) : "");
        $text = preg_replace("/^www./", "", $text);
        $last_slash = strpos($text, "/")+1;
        if ($last_slash > 1) {
            $text_length = strlen($text)-$last_slash;
            if($text_length > 10)
                $text = substr($text, 0, $last_slash+10) . "&hellip;";
        }
        if($target == "")
            return sprintf('<a rel="nofollow" href="%s">%s</a>', $url, $text);
        else
            return sprintf('<a rel="nofollow" href="%s" target="'.$target.'">%s</a>', $url, $text);
    };
    return preg_replace_callback( $pattern, $callback, $text );
}

?>