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# imap_open

(PHP 3, PHP 4 )

imap_open -- Open an IMAP stream to a mailbox

## Description

resource imap_open ( string mailbox, string username, string password [, int options])

Returns an IMAP stream on success and `FALSE` on error. 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.

A mailbox name consists of a server part and a mailbox path on this server. The special name INBOX stands for the current users personal mailbox. The server part, which is enclosed in '{' and '}', consists of the servers name or ip address, an optional port (prefixed by ':'), and an optional protocol specification (prefixed by '/'). The server part is mandatory in all mailbox parameters. Mailbox names that contain international characters besides those in the printable ASCII space have to be encoded with imap_utf7_encode().

The options are a bit mask with one or more of the following:

- OP_READONLY - Open mailbox read-only

- OP_ANONYMOUS - Dont use or update a `.newsrc` for news (NNTP only)

- OP_HALFOPEN - For IMAP and NNTP names, open a connection but dont open a mailbox

- CL_EXPUNGE - Expunge mailbox automatically upon mailbox close

To connect to an IMAP server running on port 143 on the local machine, do the following:

    $mbox = imap_open ("{localhost:143}INBOX", "user_id", "password");

To connect to a POP3 server on port 110 on the local server, use:

    $mbox = imap_open ("{localhost:110/pop3}INBOX", "user_id", "password");

To connect to an SSL IMAP or POP3 server, add /ssl after the protocol specification:

    $mbox = imap_open ("{localhost:993/imap/ssl}INBOX", "user_id", "password");

To connect to an SSL IMAP or POP3 server with a self-signed certificate, add /ssl/novalidate-cert after the protocol specification:

    $mbox = imap_open ("{localhost:995/pop3/ssl/novalidate-cert}", "user_id", "password");

To connect to an NNTP server on port 119 on the local server, use:

    $nntp = imap_open ("{localhost:119/nntp}comp.test", "", "");

To connect to a remote server replace "localhost" with the name or the IP address of the server you want to connect to.

Example 1. imap_open() example
    $mbox = imap_open ("{your.imap.host:143}", "username", "password");

    echo "<p><h1>Mailboxes</h1>\n";
    $folders = imap_listmailbox ($mbox, "{your.imap.host:143}", "*");

    if ($folders == false) {
        echo "Call failed<br>\n";
    } else {
        while (list ($key, $val) = each ($folders)) {
            echo $val."<br>\n";
        }
    }

    echo "<p><h1>Headers in INBOX</h1>\n";
    $headers = imap_headers ($mbox);

    if ($headers == false) {
        echo "Call failed<br>\n";
    } else {
        while (list ($key,$val) = each ($headers)) {
            echo $val."<br>\n";
        }
    }

    imap_close($mbox);

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