Filtering the URL in text, checking the links/URLs in text

/ *
  * @param string $text = the text for checking URLs/Links.
  * @return array $urls = 'is_url_exist' for true/false, 'urls'= list of found URLs
  * /
 static function is_url_exist_in_text($text="")
 {
  $urls = array();
  $is_url_exist = false;
  
  / / $reg_exUrl = "/((http|https|ftp|ftps)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)|(/[a-zA-Z\.]+\.[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?/))?/";  
  $reg_exUrl = "/(http|https|ftp|ftps)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?/"; // for url format : http://example.com/demo | http://example.com
  preg_match($reg_exUrl, $text, $url_1);        
        $reg_exUrl = "/(www)\.[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?/"; // for url format : www.example.com | http://www.example.com
        preg_match($reg_exUrl, $text, $url_2);
        
        $urls = array_merge($url_1, $url_2);
        if(count($urls)>=1) { $is_url_exist = true; }
  
        $results = array('is_url_exist'=>$is_url_exist, 'urls'=>$urls);
        
        return $results;
 }