This function is
currently not documented; only the argument list is
available.
Note: This extension is not
available on Windows platforms.
Installation
To enable Cyrus IMAP support and to use these functions you have to compile
PHP with the --with-cyrus option.
Predefined Constants
The constants below are defined by this extension, and
will only be available when the extension has either
been compiled into PHP or dynamically loaded at runtime.