The default PHP of DreamHost is not support Zip extension.
To let it support Zip. You need following steps.
1) Have your own customized PHP compile, which I posted before.
2) Then need to installing PECL Zip
Followed the guide on wiki.
The only difference I did, is to move zip.so file from
Because I use cgi-bin as the extension folder.
Installation Difficult Rank: Easy
Time spend: 15 mins.
After install PECL zip extension, I can use PHP to create, modify, and read zip-format files.