Request for help with fsockopen

>I'm having a problem with fsockopen function, I'm programming with php
>4.3 and need to do an HTTP POST over secure socket, ssl, here's my
>code:
>
>$context = stream_context_create();
>$result = stream_context_set_option($context, 'ssl', 'local_cert',
>"/certificate/cert.pem");
>$result = stream_context_set_option($context, 'ssl', 'passphrase',
>"passphrase");
>
>$sock = fsockopen("ssl://myhost", 443 , $errno, $errstr, 30, $context);
>if (!$sock) die("$errstr ($errno)\n");
>
>I get this error when trying to run this code:
>Warning: fsockopen(): Unable to set local cert chain file
>`/certificate/cert.pem'; Check that your cafile/capath settings include
>details of your certificate and its issuer in /path/to/file.php on line
>xxx
>
>Dunno what to do, I thought there's something wrong in my certificate
>but couldn't find any real explanation on google or php site, If anyone
>can help, it would be much appreciated.

Just to rule out the easy ones first: do you really have a /certificate
directory at the root directory of the filesystem of your server? Remember,
that parameter is not a relative URL.

There's a couple of hits on Google too, particularly one in a user note on the
SOAP part of the manual - is that any help?
>