[Tickets #6660] Fatal error with very big strings conversion

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Ticket URL: http://bugs.horde.org/ticket/6660
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 Ticket             | 6660
 Created By         | admin at elektordi.net
 Summary            | Fatal error with very big strings conversion
 Queue              | Horde Framework Packages
 Version            | FRAMEWORK_3
 Type               | Bug
 State              | Unconfirmed
 Priority           | 3. High
 Milestone          |
 Patch              | [See the hack in the description.]
 Owners             |
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admin at elektordi.net (2008-04-28 14:07) wrote:

Hello,

I got a problem today with a very big text mail (~4Mo) due to an infinite
loop in a log deamon. This causes my whole mailbox page to crash with an
PHP Fatal error:

PHP Fatal error:  Allowed memory size of 33554432 bytes exhausted (tried
to allocate 16187725 bytes) in /usr/share/horde3/lib/Horde/String.php on
line 128

I managed to prevent the error with the following hack:

        /* HACK by Elektordi 2008-04-28: Prevent crashs caused by very big
text mails */
        if(strlen($input)>1048576 && String::extensionExists('mbstring'))
{
                return @mb_convert_encoding($input, $to, $from);
        }

in file String.php and function _convertCharset, just before the line /*
Use utf8_[en|de]code() if possible. */

I did this because Mbstring seems to allocate much less memory than
utf8_xxcode functions. But a better test in the "if" is to check the free
memory instead of using the constant 1048576 (=1024*1024)

Hope this will help you!

Regards,

Elektordi