Problem with Apple Push Notification service

I tried to set the push notification on my app iPhone. I created the certificate and then I used the apns php library on my web server to create the notify, but this is the err开发者_开发知识库or:

Warning: stream_socket_client() [function.stream-socket-client]: SSL operation failed with code 1. OpenSSL Error messages: error:14094414:SSL routines:SSL3_READ_BYTES:sslv3 alert certificate revoked

It means that your apns certificate has been revoked. You can regenerate a new certificate and then try again.