What are the recommended libraries for using zip functions in PHP 5.1.6?

In PHP 5.1.6, the ZipArchive class is not available for handling zip functions. To work with zip files in PHP 5.1.6, you can use the PclZip library, which provides similar functionality for creating, extracting, and managing zip archives.

// Include the PclZip library
require_once('path/to/pclzip.lib.php');

// Create a new instance of PclZip
$zip = new PclZip('archive.zip');

// Add files to the zip archive
$zip->create('file1.txt file2.txt');

// Extract files from the zip archive
$zip->extract();