I'm attempting to install the PHP Zip extension.
My server does not have external internet access, so I downloaded it myself from PECL: http://pecl.php.net/package/zip. I chose 1.10.2, the latest "stable" release, and transferred it to my server.
pear install zip-1.10.2.tgz
You may have several
php.ini files, one for CLI and one for apache. Run
php --ini to see where the CLI ini location is.