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A PHP script to unzip files with file overwriting

Many web hosts use CPanel, as it offers a fairly intuitive way for people to manage their accounts. CPanel comes with a file manager that is functional, but somewhat clunky. Although CPanel offers a mechanism for extracting archives (.zip and .gz), this mechanism has one major downside: when extracting .zip files, currently existing files will not be overwritten. This makes upgrading software that is distributed in .zip packages very difficult.

To work around this limitation, I wrote a PHP script that allows users to extract .zip files and overwrite current files. It presents the user with a list of all the .zip files in the directory, and allows him/her to submit one for extraction. The whole process is quite intuitive. Here is what the interface looks like:

Please choose a file to unzip:

test.zip
test2.zip

Warning: Existing files will be overwritten.

The selected file is then unzipped.

To use the script, simply follow this procedure:
1) Upload this script via FTP (or paste the script into a new file) in the directory that contains the .zip file to unzip.
2) Run your web browser, and point it at the script
3) Select the file to unzip, and hit the “Unzip” button.

That’s it!

Make sure you delete the script after running it, as leaving it on the machine could result in a security issue.

unzip.php:

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