<?php

$i = $_GET[id];
$file = fopen('prod',"r");
$id = 0;
while (! feof($file)) {
   $string = fgets($file);
   if(preg_match("/$i/", $string)) {
     $arr = explode("\t",$string);
     if($arr[0] == $i) $id = $arr[1];
     if($id > 0) break;
   }
}
fclose($file);

if(preg_match("/\t/",$id)){
  $id = 0;
}

Header( "HTTP/1.1 301 Moved Permanently" ); 
if($id > 0){
Header( "Location: http://www.atmmarketplace.com/products.php?prod_id=$id" );
}else{
Header( "Location: http://www.atmmarketplace.com/" );
}
?>