(PHP 4 >= 4.1.0, PECL cyrus 1.0)
cyrus_connect — Connect to a Cyrus IMAP server
$host
[, string $port
[, int $flags
]]] ) : resourceConnects to a Cyrus IMAP server.
hostThe Cyrus IMAP host name.
portThe port number.
flags
Returns a connection handler on success 或者在失败时返回 FALSE.