Ben benim uygulama bildirim itmek için php script kullanıyorum. Ama çizgiyi izleyen on

**>" $fp = stream_socket_client('ssl://gateway.sandbox.push.apple.com:2195', $err, $errstr, 60, STREAM_CLIENT_CONNECT, $ctx);"

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

i get an error as follows:
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/amit/Desktop/NotificationFolder/apns.php on line 29
Warning: stream_socket_client(): Failed to enable crypto in /Users/amit/Desktop/NotificationFolder/apns.php on line 29
Warning: stream_socket_client(): unable to connect to ssl://gateway.sandbox.push.apple.com:2195 (Unknown error) in /Users/amit/Desktop/NotificationFolder/apns.php on line 29
Failed to connect 0

Do any one know how to get rid of this problem?? Beside it everything works fine.