Extract ZIP files in CodeIgniter without installing any PECL extensions for PHP.
$this->load->library('unzip');
// Optional: Only take out these files, anything else is ignored
$this->unzip->allow(array('css', 'js', 'png', 'gif', 'jpeg', 'jpg', 'tpl', 'html', 'swf'));
// Give it one parameter and it will extract to the same folder
$this->unzip->extract('uploads/my_archive.zip');
// or specify a destination directory
$this->unzip->extract('uploads/my_archive.zip', '/path/to/directory/);
Simple as that!