php - iOS push not going to multiple device IDs -

i fetching array of device_ids using php, , sending ios pushes each of them code -
question - devices received pushes when array of device_ids (devicetokens) 2-3 device_ids. deviecs did not receive push notifications when devicetokens array ~300 device_id long. issue? new php

(this question has been asked few times answers did not reflect problem facing)

$customers_ios = "select * `gcm_user` `gcmregios` <> '0' , `preference` = '1'";                 $c_ios = mysql_query($customers_ios);                  while($bd = mysql_fetch_array($c_ios)) {                     $devicetokens[]= $bd['gcmregios'];                  }                  $arrlength = count($devicetokens);                 //echo $arrlength;                  // put private key's passphrase here:                 $passphrase = 'mypassphrase';//'pushnotification';                  //adhoc_id setup above                 $message = $adhoc_desc;                 $title =  $adhoc_title;                    $ctx = stream_context_create();                 stream_context_set_option($ctx, 'ssl', 'local_cert', 'pushdistcertificates.pem');                 stream_context_set_option($ctx, 'ssl', 'passphrase', $passphrase);                  //'ssl://gateway.sandbox.push.apple.com:2195'                 // open connection apns server                 $fp = stream_socket_client(                   'ssl://gateway.push.apple.com:2195', $err,                   $errstr, 60, stream_client_connect|stream_client_persistent, $ctx);                  if (!$fp)                     continue;                  // create payload body                 $body['aps'] =                  array(                     'alert'=> $title,                     'message' =>                      array('adhoc' =>                          array('adhoc_id' => $adhoc_id,                             'adhoc_title' => $title,                             'adhoc_description' =>  $message,                         )                     ),                     'sound'=>'default'                 );                  // encode payload json                 $payload = json_encode($body);                  foreach($devicetokens $ios_token){                     $msg = chr(0) . pack("n",32) . pack('h*', str_replace(' ', '', $ios_token)) . pack("n",strlen($payload)) . $payload;                     $result = fwrite($fp, $msg);                  }                 // close connection server                 fclose($fp); 

similar issues had , cross checking device id in database found device id "simulator" device id of virtual device in xcode. during development dev team might have tested in simulator , sooner apns identifies id , rejects request. may specific issues , cross checking help.