I have a PHP script located in path like /var/www/vhosts/hostname/httpdocs/webservices, I have both PHP script and .pem files there, and I have called the .pem file in the script properly, but still when I run the script , I don't get push notification , instead i get warnings such as:

Warning: stream_socket_client() [function.stream-socket-client]: Unable to set local cert chain file `ck_push_test.pem'; Check that your cafile/capath settings include details of your certificate and its issuer in /var/www/vhosts/ipartyapps.com/httpdocs/webservices/testPush.php on line 12

Warning: stream_socket_client() [function.stream-socket-client]: failed to create an SSL handle in /var/www/vhosts/ipartyapps.com/httpdocs/webservices/testPush.php on line 12

Warning: stream_socket_client() [function.stream-socket-client]: Failed to enable crypto in /var/www/vhosts/ipartyapps.com/httpdocs/webservices/testPush.php on line 12

Warning: stream_socket_client() [function.stream-socket-client]: unable to connect to ssl://gateway.push.apple.com:2195 (Unknown error) in /var/www/vhosts/ipartyapps.com/httpdocs/webservices/testPush.php on line 12 Failed to connect 0

I double checked everything path, permissions and owner/group of both script and .pem files, still not getting push notification.

Any suggestions please, as it's urgent.