Description:
------------
Note:
1. imap.so is loaded (as seen from the script and, through 
get_loaded_extensions() function);
2. imap.ini is parsed (as seen from phpinfo() function);
3. php is compiled with imap (as seen from phpinfo() function, IMAP c-Client 
Version 2007e);
4. error log file (php.ini) don't record any failures after launching the 
script;
5. connection to IMAP Server (dovecot) through telnet doesn't have any problem. 
Moreover, when I start the script I see that the connection to IMAP Server goes 
well but it is disconnected immediately. That is compared to telnet connection, 
the connection through imap_open function doesn't stay opened!
6. webserver (apache) configuration is checked for misconfiguration (as imap-
functions start from webserver environment).Nothing found.  
  



Test script:
---------------
<?php
if(extension_loaded("imap"))
  {
  echo "<pre>imap loaded</pre>";
  }else{
       echo "<pre>imap not loaded</pre>";
       }

$mbox = imap_open("{XXXXX.com:143/novalidate-cert}","user_name","user_pass");

if($mbox !== FALSE)
  {
  $list = imap_list($mbox,"{XXXXX.com:143/novalidate-cert}","*");
  }else{
       echo"<br>","The stream is closed!";
       }
?>

Expected result:
----------------
An array containing the names of the mailboxes ($list).

Actual result:
--------------
imap loaded
Notice: Undefined variable: mbox in /usr/lib/cgi-bin/PPP.php on line 24 Fatal 
error: Call to undefined function  imap_list() in /usr/lib/cgi-bin/PPP.php on 
line 27