Auto detecting urls inside text - urls have some arabic letters

You need to URL encode the tag to get it to work with auto_link. It looks like this works, at least for this simple example.

Code:

$this->load->helper('url');
$url = "https://soundeals.com/community/tag/";
$tag = "ميكروفون";
echo urldecode(auto_link($url . urlencode($tag)));