Detect url

xxx-detect-url.php

  // Detect url
  if (!function_exists('parse_links')) {
    function parse_links($str) {
      // The Regular Expression filter
      $reg_exUrl = "/(http|https|ftp|ftps)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?|[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?/";
      // Check if there is a url in the text
      if(preg_match($reg_exUrl, $str, $url)) {
       // make the urls hyper links
       return preg_replace($reg_exUrl, '<a href="'.$url[0].'" rel="nofollow">'.$url[0].'</a>', $str);
      } else {
       // if no urls in the text just return the text
       return $str;
      }
    }
  }
  
  // Display
  echo parse_links( $text );

Example:
$text = "The text you want to filter goes here https://css-tricks.com/snippets/php/find-urls-in-text-make-links/ yayaya";
echo parse_links( $text );

Enjoy life !!!