PHP 5.4.36 Released

imap_open

(PHP 4, PHP 5)

imap_openOuvre un flux IMAP vers une boîte aux lettres

Description

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

Ouvre un flux IMAP vers la boîte aux lettres mailbox.

Cette fonction peut aussi être utilisée pour ouvrir des flots sur des serveurs POP3 et NNTP mais quelques fonctions et fonctionnalités ne sont disponibles qu'avec les serveurs IMAP.

Liste de paramètres

mailbox

Un nom de boîte aux lettres est constitué d'une adresse de serveur, et d'une adresse de boîte sur ce serveur. Le mot réservé INBOX représente la boîte aux lettres de l'utilisateur courant. Les noms de boîtes aux lettres qui contiennent des caractères spéciaux (en dehors de l'espace ASCII) doivent être encodés avec imap_utf7_encode().

L'adresse du serveur, mise entre accolades '{' et '}', est constituée du nom du serveur ou de son adresse IP, d'une spécification de protocole (commençant par '/') et d'un port optionnel (spécifié avec ':').

Cette partie est obligatoire dans les paramètres de la boîte aux lettres.

Tous les noms commençant par { sont des noms distants et sont sous la forme "{" nom_systeme_distant [":" port] [flags] "}" [nom_mailbox] où :

  • remote_system_name : Nom de domaine Internet ou une adresse IP de serveur entouré de guillemets.
  • port : numéro de port TCP (optionnel), la valeur par défaut est la valeur du port pour ce service.
  • flags : options, voir la table suivante.
  • mailbox_name : nom de la mailbox distante, par défaut : INBOX

Flags optionnels pour les noms
Flag Description
/service=service service pour l'accès à la mailbox, par défaut : "imap"
/user=user nom de l'utilisateur distant pour l'identification sur le serveur
/authuser=user utilisateur distance d'identification ; si spécifié, ce sera le nom de l'utilisateur dont le mot de passe est utilisé (e.g. administrator)
/anonymous accès distant en anonyme
/debug la télémétrie d'enregistrement du protocole dans les logs de déboguage de l'application
/secure ne transmet pas un mot de passe en clair à travers le réseau
/imap, /imap2, /imap2bis, /imap4, /imap4rev1 équivalent de /service=imap
/pop3 équivalent de /service=pop3
/nntp équivalent de /service=nntp
/norsh ne pas utiliser rsh ou ssh pour établir une session de pré identification IMAP
/ssl utilise Secure Socket Layer pour crypter la session
/validate-cert valide les certificats depuis le serveur TLS/SSL (c'est le comportement par défaut)
/novalidate-cert ne pas valider les certificats depuis le serveur TLS/SSL, nécessaire si le serveur utilise des certificats auto-signés
/tls force l'utilisation de start-TLS pour chiffrer la session et rejette les connexions aux serveurs qui ne le supporte pas
/notls n'utilise pas start-TLS pour chiffrer la session, y compris avec les serveurs qui le supporte
/readonly demande un accès en lecture seule sur mailbox (IMAP uniquement ; ignoré sous NNTP, et une erreur avec SMTP et POP3)

username

Le nom d'utilisateur

password

Le mot de passe associé avec l'utilisateur username

options

options est un masque de bit, qui peut prendre une ou plusieurs des valeurs suivantes :

  • OP_READONLY : Ouvre une boîte aux lettres en lecture seule
  • OP_ANONYMOUS : Ne pas utiliser, ou modifier le fichier .newsrc pour les news (NNTP uniquement)
  • OP_HALFOPEN : Pour les noms IMAP et NNTP, ouvre une connexion mais n'ouvre pas une boîte aux lettres.
  • CL_EXPUNGE : Supprime automatiquement la boîte aux lettres de la liste, lors de la terminaison du flux (voir aussi imap_delete() and imap_expunge())
  • OP_DEBUG : négociations de déboguage du protocole
  • OP_SHORTCACHE : Cache court (elt uniquement)
  • OP_SILENT : Ne pas transmettre les événements (utilisation interne)
  • OP_PROTOTYPE : Retourne le prototype du driver
  • OP_SECURE : Ne pas effectuer des identifications non sécurisées

n_retries

Le nombre maximal de tentatives de connexion.

params

Paramètres de connexion ; les clés peuvent être utilisées pour définir un ou plusieurs paramètres de connexion :

  • DISABLE_AUTHENTICATOR - Désactive les propriétés d'authentification

Valeurs de retour

Retourne un flux IMAP en cas de succès, ou FALSE si une erreur survient.

Historique

Version Description
5.3.2 Le paramètre params a été ajouté.
5.2.0 Le paramètre n_retries a été ajouté.

Exemples

Exemple #1 Différentes utilisations de imap_open()

<?php
// Pour se connecter à un serveur IMAP fonctionnant sur le port 143 de la
// machine locale, faites ceci :
$mbox imap_open("{localhost:143}INBOX""user_id""password");

// Pour se connecter à un serveur POP3 fonctionnant sur le port 110 du
// serveur local, faites ceci :
$mbox imap_open ("{localhost:110/pop3}INBOX""user_id""password");

// Pour se connecter à un serveur SSL IMAP ou POP3, ajoutez /ssl
// après la spécification du protocole :
$mbox imap_open ("{localhost:993/imap/ssl}INBOX""user_id""password");

// Pour se connecter à un serveur SSL IMAP ou POP3 avec un certificat auto-signé
// ajoutez /ssl/novalidate-cert après le protocole :
$mbox imap_open ("{localhost:995/pop3/ssl/novalidate-cert}""user_id""password");

// Pour se connecter à un serveur NNTP qui fonctionne sur
// le port 119 de la machine locale on peut utiliser la commande:
$nntp imap_open ("{localhost:119/nntp}comp.test""""");

// Pour se connecter à un serveur distant, remplacez "localhost" par
// le nom ou l'adresse IP de la machine.
?>

Exemple #2 Exemple avec imap_open()

<?php
$mbox 
imap_open("{imap.example.org:143}""username""password");

echo 
"<h1>Mailboxes</h1>\n";
$folders imap_listmailbox($mbox"{imap.example.org:143}""*");

if (
$folders == false) {
    echo 
"Appel échoué<br />\n";
} else {
    foreach (
$folders as $val) {
        echo 
$val "<br />\n";
    }
}

echo 
"<h1>en-têtes dans INBOX</h1>\n";
$headers imap_headers($mbox);

if (
$headers == false) {
    echo 
"Appel échoué<br />\n";
} else {
    foreach (
$headers as $val) {
        echo 
$val "<br />\n";
    }
}

imap_close($mbox);
?>

Voir aussi

add a note add a note

User Contributed Notes 57 notes

up
16
guilherme dot geronimo at gmail dot com
4 years ago
Using:
<?php
imap_open
( "{server.example.com:143}INBOX" , 'login' , 'password' );
?>

Got this error:
"Couldn't open stream {server.example.com:143}INBOX"

Solved by adding the flag "novalidate-cert":
<?php
imap_open
( "{server.example.com:143/novalidate-cert}INBOX" , 'login' , 'password' );
?>

=D
up
3
frederik at roal dot no
12 years ago
For all imap functions where you specify the mailbox string it is important that you ALWAYS use IP (not hostname) and the portnumber. If you do not do this imap functions will be painfully slow.
Using hostname instead of IP adds 3 seconds to each IMAP call, not using portnumber adds 10 seconds to each imap call. (hint: use gethostbyname() )
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5
Martin Eckardt
3 years ago
Since Version 5.3.2 there's a 6th parameter available to disable authentication with GSSAPI or NTLM:

Example:
<?php
$mbox
= imap_open("{w2010ExchangeServer:993/imap/ssl}", $user, $password, NULL, 1, array('DISABLE_AUTHENTICATOR' => 'GSSAPI'));
?>

This solves the problem with Exchange 2010 for me. As a reference see https://bugs.php.net/bug.php?id=33500
up
4
jeff at newscloud dot com
11 months ago
One of the issues with gmail IMAP SSL authentication is related to Google's account security.

Once you get the login error once, sign out of all your google accounts. Then, visit this link:
http://www.google.com/accounts/DisplayUnlockCaptcha

Log in with the account you're attempting to access via imap.

Follow the steps and you'll then be able to login in to gmail with php imap.

It's visually shown here:
http://jeffreifman.com/filtered-open-source-imap-mail-filtering-software-for-php/configuring-gmail/
up
4
kay at rrr dot de
4 years ago
imap_open is very simple to use, but struggles a litte bit on setups with ssl and tls.

this are tested examples for different hosts and protocols.

uncomment the host/protocol line and fill in correct username and password.

Kay

<?php

#######
# localhost pop3 with and without ssl
# $authhost="{localhost:995/pop3/ssl/novalidate-cert}";
# $authhost="{localhost:110/pop3/notls}";

# localhost imap with and without ssl
# $authhost="{localhost:993/imap/ssl/novalidate-cert}";
# $authhost="{localhost:143/imap/notls}";
# $user="localuser";

# localhost nntp with and without ssl
# you have to specify an existing group, control.cancel should exist
# $authhost="{localhost:563/nntp/ssl/novalidate-cert}control.cancel";
# $authhost="{localhost:119/nntp/notls}control.cancel";

######
# web.de pop3 without ssl
# $authhost="{pop3.web.de:110/pop3/notls}";
# $user="kay.marquardt@web.de";

#########
# goggle with pop3 or imap
# $authhost="{pop.gmail.com:995/pop3/ssl/novalidate-cert}";
# $authhost="{imap.gmail.com:993/imap/ssl/novalidate-cert}";
# $user="username@gmail.com";

$user="username like above";
$pass="yourpass";

if (
$mbox=imap_open( $authhost, $user, $pass ))
        {
         echo
"<h1>Connected</h1>\n";
        
imap_close($mbox);
        } else
        {
         echo
"<h1>FAIL!</h1>\n";
        }

?>
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4
askalski at synacor dot com
7 years ago
By default, imap_open() will retry an incorrect password 3 times before giving up.  This is a feature built into the c-client library intended for interactive mail clients (which can prompt the end user for a new username/password combo.)

The new optional parameter "$n_retries" allows PHP to override the default retry limit.  There is absolutely no reason to leave this at default, or to set it to any value other than 1.  This is especially important if the mail server you're using locks users out after too many login failures.
up
1
dejan
8 months ago
If your opening and closing of connection is too slow, the issue might be with DNS servers. You should add the IP addresses of IMAP servers to your hosts file.

It's explained here in more details http://www.dejanstosic.com/php-imap_open-too-slow-here-is-the-solution/
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1
brojann at netscape dot com
13 years ago
You can do

<? $foo = imap_errors(); ?>

to clear unwanted warning messages like 'Mailbox is empty'
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2
mightycpa
5 years ago
My script kept on timing out, even though the syntax was spot on... ultimately, I figured out that the port was blocked by my webhost, where I ran this on a shared server...

I post this just in case you miss this obvious, like I did.
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2
Amit
8 years ago
None of the above comments explain the configuration issues on Apache/Windows combination. I thought it might be helpful to list my findings here so that Windows people's time is saved.

There is a bug in Windows php_imap.dll that prevents it from connecting it to the SSL IMAP/POP3 server.

http://bugs.php.net/bug.php?id=36496&edit=1
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1
egoman69 at hotmail
4 years ago
"Couldn't open stream {127.0.0.1:143/imap/notls}INBOX"

Solved by only replacing 127.0.0.1 with localhost, php and IMAP server both in same machine, not through Proxy or anything. Weird!
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1
itstooloud
7 years ago
Works with Gmail's new IMAP function for personal and for Google Apps.

$mbox = imap_open ("{imap.gmail.com:993/imap/ssl}INBOX", "username@gmail.com", "password")
     or die("can't connect: " . imap_last_error());
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1
Anonymous
9 years ago
WHen you use the /ssl connection...  half open doesnt work...!

what i did was opened it up with the .com:143/pop3}, op_halfopen

when i was getting my folders...
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0
hashampel at yahoo dot de
3 months ago
Subfolders of INBOX have to be seperate by dot like this: 'INBOX.test'
$mailbox = '{example.example.com:143/imap/novalidate-cert}INBOX.test'
up
0
me at achronos dot ca
6 months ago
Do not bother using "/debug" flag in $mailbox or OP_DEBUG in $options. They do not do anything.

When you set either one, the underlying IMAP c-client library will gather protocol debugging data and pass it back to PHP.
However, the debug handler defined by PHP is an empty function, it doesn't do anything.

So unless you're using a customized version of the IMAP extension that does something with that handler (mm_dlog), there is no point using "/debug" or OP_DEBUG.
up
0
Brian Law
7 months ago
imap_open()
validate SSL certificate does not support Subject Alternative Name (SAN) certificate. It only validate against the Subject/Common name.
up
1
kaper at nexgc dot com
11 years ago
I had been having lots of trouble trying to get imap_open to connect to an imap server.  Then I found another post online that suggested this and it worked, so I am going to post it here.  I hope this helps others..

"I have tried with the following strings instead and it works:

for pop3: {www.server.com:110/pop3/notls}INBOX

and for imap: {www.server.com:143/notls}INBOX.
up
0
phpnote at cardiothink dot com
2 years ago
Thank you for this completely non-obvious tip, which solved the problem for me. To help search engines find this tip: the resulting error is "PHP Warning:  imap_open(): Couldn't open stream /home/your-directory/the-file-name in the-script-name on line XX"

If you include:  $str = imap_errors();  echo("imap_errors():\n");  print_r($str);
you will see:
  imap_errors():
  Array
  (
    [0] => Can't open mailbox /home/your-directory/the-file-name: no such mailbox
  )
up
0
phpnet at danepowell dot com
3 years ago
If you are accessing a local mailbox file, i.e. imap_open('/var/mail/www-data', '', ''), you may be restricted in what files you can access.

If PHP IMAP was compiled with the restrictBox option (which I believe most packages are these days), you can only access files relative to $HOME. Paths starting with '/' or '../' will be rejected.
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0
david at brayworth dot com dot au
3 years ago
I managed to use this function against Exchange 2010 without recompiling to disable kerberos

It's important to me that php installs per the standard package (yum install php)

Exchange 2010 triggers kerberos in php, and you require the kinit thing (search around google for "imap_open kinit exchange 2010" and you will find this)

To get it working I had to:
1. setup the krb5.conf file correctly
2. do a kinit username@DOMAIN.DOM with a valid username / password
3. rename the ticket file to reflect the user id of apache (usually 48)
   /tmp/krb5cc_48
4. fix ownership
   chown apache.apache /tmp/krb5cc_48

but the exchange server will use the kerberos ticket and not the username password - unless you use ssl

<?php

    $imap_user
= "username";
   
$imap_pass = "password";
   
$imap_server = "{w2010kExchangeServer:993/novalidate-cert/ssl}";

   
$mbox = imap_open("{$imap_server}INBOX", $imap_user, $imap_pass);

   
$sorted_mbox = imap_sort($mbox, SORTDATE, 0);
   
$totalrows = imap_num_msg($mbox);
    print
"$imap_server\n";

   
$startvalue = 0;
    while (
$startvalue < $totalrows) {

       
$headers = imap_fetchheader($mbox, $sorted_mbox[ $startvalue ] );
       
$subject = array();
       
preg_match_all('/^Subject: (.*)/m', $headers, $subject);
        print
$subject[1][0] . "\n";

       
$startvalue++;
    }
?>
   
One small step for php / exchange, one Giant leap for David  ....
up
0
ph at hotmail dot fr
3 years ago
For those having issues with Gmail (my problem was : "too many login failures" on a webserver, but no problem on localhost..), instead of opening with :

$inbox = imap_open($hostname,$username,$password,NULL,1) or die('Cannot connect to Gmail: ' . imap_last_error());

Use :

$inbox = imap_open($hostname,$username,$password,NULL,1) or die('Cannot connect to Gmail: ' . print_r(imap_errors()));

You will be able to see the full list of errors that happened, and hopefully it will guide you to an answer.
In my case, Google wanted me to unlock my account by typing in a captcha. But this error wasn't clearly shown through imap_last_error().

Cheers,
PH
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0
anthony2009 at ns dot sympatico dot ca
4 years ago
<?php
// You can break out the variables for $mailserver, $port, $user and
// $pass without passing brackets into functions this way. Be sure to use
// the dots to append connection strings, ie "stuff". $variable ."STUFF"
// otherwise will go to imap_open with wrong variable type. :)

$mailserver="mail.example.com";
$port="110/pop3";
$user="aj";
$pass="remax01";
 
if (
$mbox=imap_open( "{" . $mailserver . ":" . $port . "}INBOX", $user, $pass ))
{  echo
"Connected\n";
        
   
$check = imap_mailboxmsginfo($mbox);
         
    echo
"Date: "     . $check->Date    . "<br />\n" ;
    echo
"Driver: "   . $check->Driver  . "<br />\n" ;
    echo
"Unread: "   . $check->Unread  . "<br />\n" ;
    echo
"Size: "     . $check->Size    . "<br />\n" ;
        
   
imap_close($mbox);
} else { exit (
"Can't connect: " . imap_last_error() ."\n");  echo "FAIL!\n";  };
?>
up
0
oz49erfan
4 years ago
Make sure your PHP is enabled with imap via the phpinfo() function

'--with-imap-dir=/opt/lampp' '--with-imap-ssl' '--with-imap=/opt/lampp'

and

IMAP c-Client Version 2007e
SSL Support Yes

I noticed that my apache script was working but my cli script was not. Turns out my php cli executable didn't have imap setup so I had to use another php cli executable.
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0
Jason Pires
6 years ago
Dears.
In my case, e-mail host was the IMAP enabled.
So, just use the imap_open as the very simple form like:

$mailbox = "{mail.myhost.com:143/notls}INBOX";
$user = "me@myhost.com";
$pass = "mypassword";

$connection = imap_open($mailbox,$user,$pass) or die(imap_last_error()."<br>Connection Faliure!");

thanks!
up
0
Binit
6 years ago
I was trying imap_open() function but I was continuously getting this error:

Array ( [0] => [CLOSED] IMAP connection broken (server response) )

I was finally able to solve this problem (which is a very common problem as I saw it on the net but could not find any solution to it) so I'm posting my solution here which I hope will be useful to others.

I used stunnel program (http://www.stunnel.org/) and made changes in the stunnel.conf file as follows:

I added these lines:
[imapsClient]
accept = localhost:143
connect  = imapserver:993
client = yes
sslVersion = TLSv1

This will map insecure imap connection from localhost:143 to imapserver:993 (IMAP with SSL).

After this I tried this code and it worked fine:

<?php

$user
="";
$pass="";
$imap = @imap_open("{localhost:143}INBOX", $user, $pass);
?>

and I was able to do away with the errors.

A more detailed post about it can be found here:
http://www.phpfreaks.com/forums/index.php/topic,190628.0.html
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0
bow+php dot net at virtual-habitat dot net
7 years ago
Setting a mailbox name (eg INBOX) at the end of the connection string does not work when using imap_open() with OP_HALFOPEN. You may use imap_reopen() then.

<?php

/* this will fail : */
$connection = imap_open('{mx.example.net}INBOX', 'foo', 'secret', OP_HALFOPEN.);
$num_mgs = imap_num_msg($connection);
imap_close($connection);

/* this will do : */
$connection = imap_open('{mx.example.net}INBOX', 'foo', 'secret', OP_HALFOPEN.);
imap_reopen($connection, '{mx.example.net}INBOX');
$num_mgs = imap_num_msg($connection);
imap_close($connection);

?>
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0
shaikh_zaid at yahoo dot com
8 years ago
imap_open will not open a stream if your server operates with Transport Layer Security (i.e. TLS) imap_open connects with SSL if its there. So try opening mailbox as

$mailbox="{mail.domain.com:143/imap/notls}";
or
$mailbox="{mail.domain.com:110/pop3/notls}"; This works...

Some mail server requires you to provide username@domain.com so you can always use. user@doamin.com

$conn=imap_open($mailbox, $username, $password);

Some server may ask for username as "user=user@domain.com"

:)
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0
admin at sellchain dot com
9 years ago
Looking for a cool PHP Script to help you connect to a POP3 server, and download E-Mail to MySQL? Check out my neet-skeet script I wrote. Have fun.

Http://www.sellchain.com/phPOP3/phPOP3.txt

Download the above TXT file, and rename it to phPOP3.php.

Trust me, you will learn mostly everything about IMAP with this script.

By the way, be sure to use print_r($headers) to discover the headers that come with each message. You can setup your MySQL + Email Account information at the top of the script. No includes required!

Enjoyz;)
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0
avizion at relay dot dk
9 years ago
For FreeBSD users...

If you want to have SSL support, you want to install the ports:

mail/php5-imap
security/php5-openssl

Cheers :)

- avizion
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0
m dot stoel at cyberkinetic dot nl
9 years ago
a little tip for those who get really frustrated even after reading all the right solutions and implementing them but still get the same errors or none at all..:
after having changed the code.. restart the httpd deamon..

for Fedora or any other Red Hat Linux OS (/etc/init.d/httpd restart).

After this you will be able to make a imap/pop3 stream from apache..
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0
info at infosoporte.com
9 years ago
I can connect to my email server with no problem using regular usernames and passwords but.... in my server the usernames are long.. like name.surname1.surname2@subdomain.domain.com , and i get an error when the username size is over 40 chars:

$conn = imap_open("{". $server . ":110/pop3}", $username, $user_password) or die ("Failed with error: ".imap_last_error());

returns

Too many login failures

when the username is over 40 chars. Just remember that if you plan to use long usernames.
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0
elizar.palad
10 years ago
thanks to the one who added that the login part should be the whole email address for it to work.. (assuming of course that all other stuff is good and working ;)

to add something, in the 'email address' login name, is not really the email address, ,it's the pop login name plus '@' plus the domain.. hope it's not confusing...

poploginname@domain.com

not

emailaddress@domain.com..
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0
gasaunde at vcu dot edu
10 years ago
I've found that on my servers I _must_ use imap_errors() and imap_alerts() after an imap_open or this error is thrown in the logs when the mailbox is empty: [error] PHP Warning: (null)(); Mailbox is empty (errflg=1) in Unknown on line 0
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0
liamr at umich dot edu
10 years ago
To authenticate using kerberos V / GSSAPI, you might need to add "user=" to the connection string.. eg:

$mbox = imap_open( "\{imap.example.com:143/imap/notls/user=" . $user . "}INBOX", $user, $passwd );

Our IMAP servers won't allow a user other than the user specified in the kerberos credentials connect using those credentials unless you specify that extra "user=" in the connection string.  Passing it as an argument to imap_open() doesn't seem to be enough.
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0
nmmm at nmmm dot nu
10 years ago
To open local mailbox ( mbox ) enter its absolute file name.

>an absolute filename
>This specifies a mailbox in the default format (usually >Berkeley format for most default library builds)

source:
http://aspn.activestate.com/ASPN/CodeDoc/Mail-Cclient/Cclient.html
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0
rvarkelen AT hortimax.nl
10 years ago
In order to make a IMAP connection to a Microsoft Exchange Server 5.5, I used this connection-string :

<?php
if(imap_open ("{192.168.1.6:143/imap}Inbox", "DOMAIN/USERNAME/ALIAS", "PASSWORD"))
{
    echo
'Connection success!';
}
else
{
    echo
'Connection failed';
}
?>

By replacing "Inbox" with, e.g. "Tasks", its possible to see all your tasks. I Hope this helps anybody!

Regards
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0
marshall /AT\ pacdemon.org
11 years ago
Thanks for all your comments.  The user comments have saved me countless times.

I'd like to give back in my small way by providing this little tip.  To test your pop or imap services you can use telnet (almost all operating systems should come with a command line telnet client).

Here's the pop3 example (the lines that start with + are the server's response):

    telnet your.pop.host.com 110
    +OK POP3 your.pop.host.com v2001.78 server ready
    user your_username
    +OK User name accepted, password please
    pass your_password
    +OK Mailbox open, 23 messages

Note that your pop server may be on some other port than 110 but that is the default/standard.

Here's the imap example (Lines that have OK near the begining are server responses):

    telnet your.imap.host.com 143
    * OK [CAPABILITY IMAP4REV1...]
    1 LOGIN "your_username" "your_password"
    1 OK [CAPABILITY...] ... User your_username authenticated

This might be old news to some people but I hope it's helpful for many.
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Kyle Putnam
11 years ago
I was getting bizzare errors that I couldn't find documentation about anywhere on Google. I tried connecting to another server and got different, but just as unusual error messages. I even checked the POP3 server logs and it said something about invalid command... I figured it was another libc problem.

Stupidly enough, the problem was that I was using an unset variable for the password! Make sure you don't have an empty username or password... you'll have a hard time debugging the problem ;)
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stefan dot greifeneder at dioezese-linz dot at
11 years ago
Had problems to use imap_open with iMail 6.06 Server. My problem was (sounds stupid): Didn't realise that the username had to be the full email address and not just the login. Maybe this helps some people.
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bill dot mccoy at pictureiq dot com
11 years ago
"notls" seems to be required for PHP on RedHat 8.0, but it seems that "/norsh" is also advisable; without it, the client library will attempt an RSH connection and wait for this to timeout before reverting to normal IMAP. This was causing a 15 second delay in imap_open for me. Looking at the client lib C code this will likely be an issue on other platforms as well as they update to the newer version. You can use both "/notls" and "/norsh", e.g. the first parameter to imap_open can be something like: "{your.imap.host/imap/notls/norsh}".
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xore at hotmail dot com
11 years ago
pop3 seems to like refusing connection if you have OP_READONLY set

testers: be forewarned :P
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madsiuk at morellos dot net
11 years ago
hi
  Note for all having problems to connect hosts using imap_open:

  I spent almost week trying to fix my script which was connecting to localhost but was unable to connect any other host. Sollution was actually wery simple but I'm writing that note becouse there are some posts at usenet or forums decribing similiar problems. And actually I haven't found any  answer for that. So for all of you trying to connect to hosts with imap_open CHECK IF THERE IS NO FIREWALL BLOCKING POP3.

madsiuk
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jpdalbec at ccNO dot ysuSPAM dot edu
12 years ago
I ran into the
PHP Warning:  Certificate failure for <server>: self signed certificate:
message while upgrading 4.0.6->4.1.2.  I'm pleased to report that {<server>:<port>/imap/tls/novalidate-cert}<mailbox>
works as expected (and fixes my problem).  I'm using IMP 2.2.8.
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fxbois at free dot fr
12 years ago
Hi,
I just want to say to all redhat people who have problem (Couldn't open stream) with the connection on the local pop server to use this :
{127.0.0.1:110/pop3/notls}INBOX
hope this help
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jdg11 at po dot cwru dot edu
13 years ago
It would be nice to mention that this function does send headers. It makes sense, but it is not obvious. It took me a while to figure it out. I authenticate against a POP3 server, and set a cookie if the authentication validates. At least I wanted to :) But since it sends a header to the server, setcookie() won't work.
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curtis at lamere dot net
13 years ago
I have found that the syntax for the imap_open command in PHP 4 differs whether you're passing a variable to the imap_open function or declaring the host directly within the function.  If you are passing variables to the imap_open function, the syntax should look like:

$username = "user";
$password = "password";
$mailserver = "mail.somedomina.com:110/imap";

$link = imap_open("\{$mailserver}INBOX",$username,$password);

If you don't include the leading backslash (\) you will not open the stream.  Likewise you cannot pass the curly braces to the function.

If you define the server directly, omit the leading backslash.

$username = "user";
$password = "password";

$link = imap_open("{mail.somedomain.com:110/pop3}",$username,$password)"

I discovered all of this after 3 days of trying to get all of this work on redhat 7.1.
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Anonymous
13 years ago
A better way to connect to a mail server would be to use uri syntax, for example:

imap://username:password@server.com:143/INBOX/message/part

this is very easy to parse using 'parse_url()'

Remember to keep your username and password hidden if your over an open network
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fferreres at joydivision dot com dot ar
13 years ago
IMAP, POP and NNTP are ok. But plaintext mailboxes are unmentioned here. You just forget the {part} and go for the file (tested on unix):

$mbox = imap_open ($a_mail_box_file_name_in_home_dir, "", "") || die("Snif...:
".imap_last_error());
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kvance at n-link dot net
13 years ago
Connections to the IMAP server work without specifying the port number, but they are slow, so specifying the port number is important if you don't want a slow application.
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bandpay at hotmail dot com
14 years ago
I have a single comment to add about imap_open.
If you want to connect to a news server, without specifying any news gruop, you can use the following:

<?php
$server
= "{news.servername.com/nntp:119}";
$nntp = imap_open($server,"","",OP_HALFOPEN);
?>

and $nntp will become the connection ID.

Regards
//Babak
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gyokimae
7 years ago
Beginning with 5.2.2, binaries built for Windows also seem to have changed its default behavior.
'/notls' needs to be specified for a non-SSL connection.
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Fladnag
7 years ago
you can avoid this message :

Warning: (null)(); Mailbox is empty (errflg=1) in Unknown on line 0

by specified the option OP_SILENT to imap_open.
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thushara dot perera at unilink dot lk
9 years ago
Warning: imap_open() [function.imap-open]: Couldn't open stream {xx.xx.x.xxx:143}INBOX

correct the connection string as :
{xx.xx.x.xxx:143/notls}INBOX
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marshall /at/ sprux net
11 years ago
I only run imap on port 993 (ssl only) and I was unable to use imap_open().. couldn't even get an error out of the script, it just sat there and timed out with no messages in the logs or anything--the page wouldn't load.

Anyway, this is what finally worked, which I found in the readme for a popular opensource webmail system:

$i = @imap_open("{localhost:993/ssl/novalidate-cert}INBOX", $user, $pw);

I didn't see the 'ssl' option mentioned anywhere in these comments so maybe this will help someone out.
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jeff1326
3 years ago
If your connection is too slow, try it with port and without domain.

<?php
//Normal connection
$mailbox = imap_open("{SERVER}INBOX", $username, $password);

//Faster connection
$mailbox = imap_open("{SERVER:143}INBOX", $username, $password);

//Very slow connection
$mailbox = imap_open ("{SERVER.DOMAIN}INBOX", "DOMAIN/".$username, $password);
?>
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russell at flora dot ca
11 years ago
Note about "PHP Warning:  Certificate failure"

I'm not sure if this is a RedHat, PHP, or IMAP library issue, but the default for SSL seems to have changed.

You now need to specify "/notls" when you don't want TLS, rather than only needing to specify "/ssl" when you do.

Example: 

"{localhost:143}INBOX"

becomes:

"{localhost:143/notls}INBOX"
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Nohado
4 years ago
if u ever get something like this:

Notice: Unknown: IMAP protocol error: Invalid system flag in Store command (errflg=2) in Unknown on line 0

Notice: Unknown: Invalid system flag in Store command (errflg=2) in Unknown on line 0

This Error occurs if u want to set a flag 2 times. Just check ur manually flag Settings.

Cheers,
Nohado
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