## Example

`

     resource imap_open ( string $mailbox , string $username , string $password [, int $options = NIL [, int $n_retries = 0 [, array $params = NULL ]]] )

`

## Description

Opens an IMAP stream to a mailbox. This function can also be used to open streams to POP3 and NNTP servers, but some functions and features are only available on IMAP servers.

## Return Values

Returns an IMAP stream on success or FALSE on error.