Archive WordPress uploads in a ZIP file on the server

zip-uploads.php

<?php

function addDirToZip(string $dir, ZipArchive $zipFile, string $basePath = '')
{
    $files = scandir($dir);
    // Remove '.' and '..'
    unset($files[0], $files[1]);

    foreach ($files as $file) {
        $filePath = $dir . $file;
        $relativePath = $basePath . $file;

        if (is_dir($filePath)) {
            $zipFile->addEmptyDir($relativePath . '/');
            addDirToZip($filePath . '/', $zipFile, $relativePath . '/');
        } else {
            $zipFile->addFile($filePath, $relativePath);
        }
    }
}

$sourceDir = 'wp-content/uploads/';
$zipFileName = 'uploads.zip';
$zip = new ZipArchive();

if ($zip->open($zipFileName, ZipArchive::CREATE) !== true) {
    exit("Cannot open '$zipFileName'>\n");
}

addDirToZip($sourceDir, $zip);
$zip->close();
echo "ZIP file '$zipFileName' created successfully!\n";