[wraggster]

ok got this working nicely in VB3.8.7 for amazon UK

basically did this

PHP Code:

<?php

function process_amazon_links($message)
{


// Convert any amazon links to use your affilliate id.

// enter your associate id here

$associate_id = "dcemu-21";

   if(preg_match_all("/(\"\])/",$message,$tagarray))
   {
      for($i=0;$i<count($tagarray[1]);$i++)
      {
         $tagarray[1][$i] = $tagarray[1][$i]." ";
      }
     $message=str_replace($tagarray[0],$tagarray[1],$message);   
   }
     if(!preg_match_all("/(\[img\S+)/",$message,$messagearray)){
   if(preg_match_all("/(http:\/\/[A-z0-9\.]+amazon.co.uk\/\S+)/",$message,$messagearray))
   {
     
          for($i=0;$i<count($messagearray[1]);$i++)
          {
               if(!stristr($messagearray[1][$i],"$associate_id"))
              {
                     $strippedurl = preg_split("/\/[a-zA-Z0-9]{3}-[a-zA-Z0-9]{7}-[a-zA-Z0-9]{7}/", $messagearray[1][$i]);
                     $messagearray[1][$i] = $strippedurl[0].$strippedurl[1];
                      // Look for an asin number
                    if(!preg_match("/\/[a-zA-Z0-9]{10}\//", $messagearray[1][$i],$asin))
                    {
                         if(stristr($messagearray[1][$i],"http://www.amazon.co.uk/exec/obidos/"))
                         {
                              $strippedurl = preg_split("/http:\/\/www.amazon.co.uk\/exec\/obidos\//",$messagearray[1][$i]);
                              $messagearray[1][$i] = $strippedurl[0].$strippedurl[1];
                         }
                 
                         if(stristr($messagearray[1][$i],"[/url]"))
                         {
                             $strippedurl = preg_split("/\[\/url\]/",$messagearray[1][$i]);
                            $messagearray[1][$i] = $strippedurl[0].$strippedurl[1];
                             $messagearray[1][$i] = "http://www.amazon.co.uk/exec/obidos/redirect?link_code=ur2&camp=1789&tag=".$associate_id."&creative=9325&path=".$messagearray[1][$i]."[/url]";
                         }
                         else
                         {
                            $messagearray[1][$i] = "http://www.amazon.co.uk/exec/obidos/redirect?link_code=ur2&camp=1789&tag=".$associate_id."&creative=9325&path=".$messagearray[1][$i];

                         }
                     }
                     else
                     {
                         if(stristr($messagearray[1][$i],'"]'))
                         {
                         $bracketarray[0]='"]';
                         $bracketarrayrep[0] = '"] ';
                         $messagearray[1][$i]= str_replace($bracketarray,$bracketarrayrep,$messagearray[1][$i]);
                         $messagearray[1][$i] = "http://www.amazon.co.uk/exec/obidos/ASIN".$asin[0]."/ref=nosim/" . $associate_id.'"]';
                     }
                     elseif(stristr($messagearray[1][$i],"[/url]"))
                     {
                         $messagearray[1][$i] = "http://www.amazon.co.uk/exec/obidos/ASIN".$asin[0]."/ref=nosim/" . $associate_id."[/url]";
                     }
                     else
                     {
                         $messagearray[1][$i] = "http://www.amazon.co.uk/exec/obidos/ASIN".$asin[0]."/ref=nosim/" . $associate_id;
                     }
                 }
    
               }
          }
       }
   $message=str_replace($messagearray[0],$messagearray[1],$message);   
   }
   return $message;
}


?>

you can use this plugin for amazon uk and https://vborg.vbsupport.ru/showthread.php?t=163393 for amazon usa at same time, works a treat.