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Asked: 2026-05-19T01:35:45+00:00

I’m in the process of writing some epub creation functionality using php5. Currently I

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I’m in the process of writing some epub creation functionality using php5. Currently I am attempting to use ZipArchive but have run into a couple annoyances with it. First of all, there is no functionality to set the compression level. Second of all, ZipArchive::addFile() seems to fail silently and create a corrupt archive whenever I use it. I have been using file_get_contents() + ZipArchive::addFromString() instead but would prefer to just use the documented function for adding files.

I will not post code samples unless someone would really like to help me debug this issue, but rather I’m wondering if there are any other libraries for creating zip (pkzip) archives in PHP that you would recommend. So far, I have seen PclZip, whose site does not seem to be loading, but not much else. I have also considered using exec() + zip (unix command). This code will only run on this one particular linux box so portability is not an issue.

Thanks in advance for any suggestions!

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1 Answer

  1. Editorial Team

    PCLZip is pretty good alternative, with zlib as its only dependency, if you can get access to the site. It’s probably temporary, it was certainly accessible between Christmas and New Year.

    It’s also pretty efficient, even in comparison with ZipArchive

    EDIT

    You say that you’ve had problems with ZipArchive’s addFile() method. Is this in a Windows environment, or on your Linux server? I know that there have been a few buggy releases of the php_zip library on Win32 that can give this problem, although the latest versions seem OK, and I’ve not encountered the same problem on other platforms (even the WIN64 version).

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