Youbi key Integration with php

Hi , I am finding a problem during the youbi key integration:

 $apiKey = $youbekeyvalue; //this value is coming from my form.
 $message = 'id=1234&otp='.$key.'';//key has been i am saving in the database for a particular user.
   $signature = hash_hmac('sha1', $message, $apiKey, TRUE);
   $signature = base64_encode($signature);
   $url = 'http://api.yubico.com/wsapi/verify?'.$message.'&amp;h='.$signature.'';
   // $url becomes http://api.yubico.com/wsapi/verify?id=1&amp;otp=ddkwn3kdlsh3kglskeh3kld&amp;h=ODK20DHD92LSHGKJLSL3KSL
   $ch = curl_init($url);

   curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);

   $result = curl_exec($ch);

   print_r($result);

   curl_close($ch);

   $statusstring   = stristr($result,"status=");

   $finalresponse  = explode("=",$statusstring);

   if($finalresponse[1]=="OK")
    return 1;
   else
    return 0;

Every time i am using this code it is giving me the response the bad signature. Can anyone please help me out to give me the working you bi key code where i can get the status ok.

ansaurus

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Youbi key Integration with php

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