About the apple Enhanced notification format - php

Question

I use php to send push message to apns , i use "Enhanced notification format" to sent .. but i can not get the return" Codes in error-response packet" anyone can help me ?? here is my code
<?php
header("Content-Type: text/html; charset=UTF-8");
$deviceToken = "123";
$content = "testing";
if(isset($content))
{
$newContent=substr($content,0,30)."...";
$re_content=iconv("GB2312","UTF-8",$newContent);
$pass = 'Ladder';
$body = array("aps" => array("alert" => $re_content, "badge" => 1, "sound" => 'received5.caf'));
$ctx = stream_context_create();
stream_context_set_option($ctx, 'ssl', 'local_cert', 'dev.pem');
stream_context_set_option($ctx, 'ssl', 'passphrase', $pass);
//$fp = stream_socket_client('ssl://gateway.push.apple.com:2195', $err, $errstr, 60, STREAM_CLIENT_CONNECT, $ctx);
$fp = stream_socket_client('ssl://gateway.sandbox.push.apple.com:2195', $err, $errstr, 60, STREAM_CLIENT_CONNECT, $ctx);
stream_set_blocking ($fp, 0);
if (!$fp)
{
print "Failed to connect $err $errstrn";
return;
}
else
{
print "Connection OK\n<br/>";
}
$payload = json_encode($body);
$msg =
// new: Command "1"
chr(1)
// new: Identifier "1111"
. chr(1) . chr(1) . chr(1) . chr(1)
// new: Expiry "tomorrow"
. pack('N', time() + 86400)
// old
. chr(0) . chr(32) . pack('H*', str_replace(' ', '', $deviceToken)) . chr(0) . chr(strlen($payload)) . $payload;
//print "sending message :" . $payload . "\n";
fwrite($fp, $msg);
//checkAppleErrorResponse($fp);
echo 'Done\n';
fclose($fp);
echo $apple_error_response = fread($fp, 6);
/* return false;
exit(); */
}
?>

Answer 1

I call this function after fwrite and before close commands
function error_response($fp)
{
$read = array($fp);
$null = null;
$changedStreams = stream_select($read, $null, $null, 0, 1000000);
if ($changedStreams === false)
{
echo ("Error: Unabled to wait for a stream availability");
}
elseif ($changedStreams > 0)
{
$responseBinary = fread($fp, 6);
if ($responseBinary !== false || strlen($responseBinary) == 6)
{
$response = unpack('Ccommand/Cstatus_code/Nidentifier', $responseBinary);
var_dump($response);
}
}
}
It works when I sending a notification in the enhanced format. But doesn't work with notification in the simple format. I don't have idea why... Any clue?