What are some alternatives to using PEAR or PHP-intern zip functions for unzipping files in PHP?

When looking for alternatives to using PEAR or PHP-intern zip functions for unzipping files in PHP, one option is to use the `ZipArchive` class that is available in PHP. This class allows you to easily create, open, and extract files from zip archives. Another alternative is to use external libraries such as `ZipStream` or `PHPZip`. These libraries provide additional functionalities and flexibility for working with zip files in PHP.

// Using ZipArchive class to unzip files in PHP
$zip = new ZipArchive;
if ($zip->open('file.zip') === TRUE) {
    $zip->extractTo('extracted_files/');
    $zip->close();
    echo 'Files unzipped successfully';
} else {
    echo 'Failed to unzip files';
}

// Using ZipStream library to unzip files in PHP
require 'ZipStream.php';
$zip = new ZipStream('file.zip');
$zip->unzip('extracted_files/');
$zip->finish();
echo 'Files unzipped successfully';

// Using PHPZip library to unzip files in PHP
require 'PHPZip.php';
$zip = new PHPZip('file.zip');
$zip->extract('extracted_files/');
echo 'Files unzipped successfully';