[horde] Allowed memory exhausted in Horde/Imap/Client/Ids.php:178

[Bjoern Voigt]

I can't login in my Horde 5.2 (current) account anymore.

The error message is:

    Allowed memory size of 134217728 bytes exhausted (tried to allocate
    7783056 bytes)

    1. Horde_ErrorHandler::catchFatalError()

    Details

    [...]

    ErrorException Object
    (
        [message:protected] => Allowed memory size of 134217728 bytes exhausted (tried to allocate 7783056 bytes)
        [string:Exception:private] => 
        [code:protected] => 0
        [file:protected] => /usr/share/php/Horde/Imap/Client/Ids.php
        [line:protected] => 179
        [trace:Exception:private] => Array
            (
                [0] => Array
                    (
                        [function] => catchFatalError
                        [class] => Horde_ErrorHandler
                        [type] => ::
                        [args] => Array
                            (
                            )

                    )

            )

        [previous:Exception:private] => 
        [severity:protected] => 1
        [logged] => 1
    )

I debugged this. The crash occurs here:

                if (!$this->duplicates) {

                    Horde::log(sprintf('IMAP IDs %d ids=%s.', count($this->_ids), implode(",", $this->_ids)), 'ERR');

                    $this->_ids = (count($this->_ids) > 25000)

                        ? array_unique($this->_ids)

                        : array_keys(array_flip($this->_ids));

                }

Increasing Apache/PHP memory does not solve the problem. Currently I
have increased PHP memory from 128 to 512 MB.

During crash the variable $ids has the value
"1:486128,486130,486132:486327,486330:486331,486334:486335,486347,486352:486353,486355,486361:486366,486432:486514,486518:486522,486526:486528,486560:486569".

$this->_ids is a very long array starting with 1,2,3 and ending with
45005,45006,45007.

Both variables are NOT from the same login.

I think the "1" in $ids causes the problem, because all IDs between 1
and 486128 (1,2,3...486128) make the array so big.

Currently I can login again. But I am unsure, if this problem comes again.

Greetings,
Björn