你尝试过什么是什么呢？

http://www.raywenderlich.com/3443/apple-push-notification-services-tutorial-part-12
http://www.raywenderlich.com/3525/apple-push-notification-services-tutorial-part-2

这是有关生成证书的，使得PHP脚本等一个很好的教程。

I get this error after trying to execute my php script to send a push notifcation to my iphone.

I have tried everything and nothing works. I believe that this means my ck.pem is wrong but im not sure if its the key.pem or the cert.pem that is wrong.

Please help

Script

    // This this a fake device id:
$deviceToken = '9870h8v088bj29u080af894jj67klfgcv9mmm79k8e4l23456h908743n093e359';

// fake password:
$passphrase = '123456';

// Put your alert message here:
$message = 'New Message';
   ////////////////////////////////////////////////////////////////////////////////

$ctx = stream_context_create();
stream_context_set_option($ctx, 'ssl', 'local_cert', 'ck.pem');
stream_context_set_option($ctx, 'ssl', 'passphrase', $passphrase);

// Open a connection to the APNS server
$fp = stream_socket_client(
                           'ssl://gateway.sandbox.push.apple.com:2195', $err,
                           $errstr, 60, STREAM_CLIENT_CONNECT|STREAM_CLIENT_PERSISTENT, $ctx);

if (!$fp)
exit("Failed to connect: $err $errstr" . PHP_EOL);

echo 'Connected to APNS' . PHP_EOL;

// Create the payload body
$body['aps'] = array(
                     'alert' => $message,
                     'sound' => 'default',
                     'badge' => '1'
                     );

// Encode the payload as JSON
$payload = json_encode($body);

// Build the binary notification
$msg = chr(0) . pack('n', 32) . pack('H*', $deviceToken) . pack('n', strlen($payload)) . $payload;

// Send it to the server
$result = fwrite($fp, $msg, strlen($msg));

if (!$result)
echo 'Message not delivered' . PHP_EOL;
else
echo 'Message successfully delivered' . PHP_EOL;

// Close the connection to the server
fclose($fp);

?>

Error

Warning: stream_socket_client(): SSL operation failed with code 1. OpenSSL Error messages:
error:14094416:SSL routines:SSL3_READ_BYTES:sslv3 alert certificate unknown in     /Users/daveking/Desktop/App Certificates/simplepush.php on line 21

Warning: stream_socket_client(): Failed to enable crypto in /Users/daveking/Desktop/App Certificates/simplepush.php on line 21

Warning: stream_socket_client(): unable to connect to ssl://gateway.sandbox.push.apple.com:2195 (Unknown error) in /Users/daveking/Desktop/App Certificates/simplepush.php on line 21
Failed to connect: 0 

What have you tried exactly?

http://www.raywenderlich.com/3443/apple-push-notification-services-tutorial-part-12 http://www.raywenderlich.com/3525/apple-push-notification-services-tutorial-part-2

This is a good tutorial on generating the certificate, making the php script etc.