Thu, 09 Apr 2026 19:39:42 +0000 https://bugs.horde.org/ticket/8096 Download big folders as zip Problem: When requesting a ZIP of one "big" mailbox (or many small) PHP may exceed max memory limit. The attached patch uses tempnam() and is based on Ross Becker work: http://lists.horde.org/archives/imp/Week-of-Mon-20040906/039136.html Prerequisite: ZipArchive pecl extension Todo: tmpdir should change with OS default (now is "/tmp") but tempnam behaviour is different between php version and OS. Wed, 18 Mar 2009 12:45:27 +0000 https://bugs.horde.org/ticket/8096#t53156 There is ticket for Ansel (Bug: 7814) for using a stream for zip downloading. That should probably be made a framework ticket to be implemented in Horde_Compress and would probably make sense here as well. Wed, 18 Mar 2009 13:54:22 +0000 https://bugs.horde.org/ticket/8096#t53160 I agree with your comment ( I search compress library in Horde framework before writing the patch). Until Horde4 with ZipStream is ready I will be happy using tmp files. !important! A collegue notice that old PHP versions have a memory leak in fpassthrough() that should be replaced with: while(!feof($mbfile)) { echo fread($mbfile, 4096); ob_flush(); } Attached patch solves this issue and (maybe) is faster. Wed, 18 Mar 2009 14:37:18 +0000 https://bugs.horde.org/ticket/8096#t53164 This won't be committed because it assumes the user has the PECL module installed. Mon, 30 Mar 2009 22:09:25 +0000 https://bugs.horde.org/ticket/8096#t53386 Can you create a patch which works without ZipArchive being available? Wed, 03 Jun 2009 13:45:52 +0000 https://bugs.horde.org/ticket/8096#t54394 > Can you create a patch which works without ZipArchive being available? I googled for zip php libs but all I found is: read the file in memory, compress it and write it. Obviously this doesn't help. I will investigate if I can: read a chunk, compress it and progressively add to the zip file. BTW Excerpt from http://www.horde.org/horde/docs/?f=INSTALL.html pear install -o Log Mail Mail_Mime DB Date File pear -d preferred_state=beta install -a Services_Weather So, what's the problem in including one more (useful) package? Wed, 03 Jun 2009 17:30:22 +0000 https://bugs.horde.org/ticket/8096#t54395 Because ZipArchive is from a PHP extension (or PECL package), not a PEAR package. Installation is another notch harder. I'm happy to use it if it's available, but we should not require it. Wed, 03 Jun 2009 17:41:46 +0000 https://bugs.horde.org/ticket/8096#t54396 ... and I forgot to correct myself: it's *"Zip PECL extension"* ZipArchive is the name of the main class. Not be confused with ZipArchive Library (full version is commercial) php-pecl-zip is available in RPM, deb , ecc. Wed, 03 Jun 2009 17:47:45 +0000 https://bugs.horde.org/ticket/8096#t54397 > Because ZipArchive is from a PHP extension (or PECL package), not a > PEAR package. Installation is another notch harder. I'm happy to use > it if it's available, but we should not require it. To explain a bit more: your patch will cause a fatal error if ZipArchive is not installed. There's no problem with using ZipArchive if available with a fallback. Just can't require the existence of the extension. Wed, 03 Jun 2009 17:56:21 +0000 https://bugs.horde.org/ticket/8096#t54398 I was writing from scratch a function to create Zip archive (mostly complete) when I stumbled on this nice piece of software http://www.phpconcept.net/pclzip/index.en.php Even Joomla uses it. So, I rewrote a patch which use the last PclZip(2.8) copied in lib/PclZip.php and some tricks to get the correct file name inside the archive. Prerequisite: none (all inside the patch) Wed, 10 Jun 2009 18:42:14 +0000 https://bugs.horde.org/ticket/8096#t54524 > I was writing from scratch a function to create Zip archive (mostly > complete) when I stumbled on this nice piece of software > http://www.phpconcept.net/pclzip/index.en.php > Even Joomla uses it. That library is the definition of mega-bloat. And it doesn't do streams, so it is of little value. I have added stream support to Horde_Compress_Zip, and IMP 5.0 uses these streams to download the data. It uses PHP's temp streams, so it will not use more than 2 MB of memory. Tue, 14 Jul 2009 03:00:38 +0000 https://bugs.horde.org/ticket/8096#t54944