Find any url in a string and replace it with a clickable lin

gistfile1.php

#!/usr/bin/env php 
<?php

function create_link($msg) {

  $pattern = array(
    '/(((http|https|ftp|ftps)\:\/\/)(?:[\w\-\d]+\.)+[\w\-\d]+(?:\/[\w\-\d]+)*(?:\/|\.[\w\-\d]+)?(?:\?[\w\-\d]+\=[\w\-\d\+]+)?(?:\&[\w\-\d]+\=[\w\-\d\+\.\%]+)*(?:\#[\w\-\d]*)?)/',
  );
  $replace = array(
    '<a href="$1">$1</a> [<a href="$1" target="_blank">^</a>]' ,
  );
  
  $msg = preg_replace( $pattern , $replace , $msg );
  
  return stripslashes( utf8_encode( $msg ) );
}

$teststr = "
This will match and link the following url 
https://www.google.com/search?num=100&hl=en&tbo=d&q=this+is+a+quick+search&oq=this+is+a+quick+search";

echo create_link($teststr);