1:  <?php
   2:  function search_string($start , $end , $from, $number=1){
   3:      if($number<1){
   4:          $number=1;
   5:      }
   6:      $from = trim(str_replace("\r\n","",$from));
   7:      $i = 0;
   8:      $ans = $from;
   9:      if(!stristr($ans , $start)){
  10:          return false;
  11:      }
  12:      while($i<$number){
  13:          if(stristr($ans , $start)){
  14:              $ans = stristr($ans , $start);
  15:              $ans = substr($ans, strlen($start));
  16:          }
  17:          $i++;
  18:      }
  19:      if(strpos($ans, $end)){
  20:          $pos = strpos($ans, $end);
  21:          $ans = substr($ans, 0, $pos);
  22:      }
  23:      if(isset($ans) && $ans != "" ){
  24:          return trim(str_replace("\r\n","",$ans));
  25:      }else{
  26:          return false;
  27:      }
  28:  }
  29:   
  30:  $ch = curl_init();
  31:  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  32:  //super cool url!
  33:  $url="http://to./";
  34:  curl_setopt($ch, CURLOPT_URL, $url);
  35:   
  36:  $query="url=".urlencode($_GET['url']);
  37:  curl_setopt($ch, CURLOPT_POST, true);
  38:  curl_setopt($ch, CURLOPT_POSTFIELDS, $query);
  39:  $result = curl_exec($ch);
  40:  $url=search_string("value=\"","\"",$result);
  41:   
  42:  echo $url;
  43:  ?>