loops - PHP For iOS Push Notifications, Sometimes More Than 1 Device -

i building app in using nsuserdefaults store various pieces of information, including devicetoken used apns on ios. way working user submits request, , adds entry xml, 1 of elements in xml called devicetoken. when responds request, triggers php @ bottom of page send push notification devicetoken of particular request. issue people have more 1 device, , nice send push notification of owner's devices. can see in code below, have 2 areas devicetokens. if xml contains 2 device tokens, great. issue ones there 1 token, fail deliver one. how can fix php able accept 2 devicetokens, still deliver if 1 available?

<?php $first_name = $_post['first_name'];  $last_name = $_post['last_name'];  $title = $_post['title'];  $devicetoken = $_post['devicetoken'];  $devicetoken2 = $_post['devicetoken2']; $xml = simplexml_load_file("http://www.url.xml") or die("not loaded!\n");  $passphrase = 'passphrase';  // put alert message here: $message = 'someone responded you!';  ////////////////////////////////////////////////////////////////////////////////  $ctx = stream_context_create(); stream_context_set_option($ctx, 'ssl', 'local_cert', 'ck.pem'); stream_context_set_option($ctx, 'ssl', 'passphrase', $passphrase);  // 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)     exit("failed connect: $err $errstr" . php_eol);  echo 'connected apns' . php_eol;  // create payload body $body['aps'] = array(     'alert' => $message,     'sound' => 'default'     );  // encode payload json $payload = json_encode($body);  // build binary notification $msg = chr(0) . pack('n', 32) . pack('h*', $devicetoken) . pack('n', strlen($payload)) . $payload; $msg2 = chr(0) . pack('n', 32) . pack('h*', $devicetoken2) . pack('n', strlen($payload)) . $payload;  // send server $result = fwrite($fp, $msg, strlen($msg)); $result = fwrite($fp, $msg2, strlen($msg2));   if (!$result)     echo 'message not delivered' . php_eol; else     echo 'message delivered' . php_eol;  // close connection server fclose($fp);   ?> 

what can use function generic one: is, accepts device token object. single string, or array of multiple strings.

then, check whether$devicetoken array using is_array function. ref:http://us3.php.net/manual/en/function.is-array.php

for this, may have rewrite small bits of code. overall, this:

if(is_array($devicetoken)) {     // iterate on array , call same function each string     return; }  // you're code send push notification have above.