ZipHelper.php

<?php

namespace App\Helper;

/**
 * @author Dawid Góra <dawidgora@mountflare.com>
 */
class ZipHelper
{
    /**
     * @param string $inputPath
     * @param string $outputPath
     * @throws \Exception
     */
    public function zipDirectory(string $inputPath, string $outputPath): void
    {
        $zip = new \ZipArchive();

        if ($zip->open($outputPath, \ZipArchive::CREATE | \ZipArchive::OVERWRITE) !== true) {
            throw new \Exception('Unable to open zip archive');
        }

        $inputPath = rtrim($inputPath, DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR;

        $this->addToZip($inputPath, null, $zip);

        $zip->close();
    }

    /**
     * @param string $basePath
     * @param string|null $relativePath
     * @param \ZipArchive $zip
     */
    private function addToZip(string $basePath, ?string $relativePath, \ZipArchive $zip): void
    {
        $path = $basePath . $relativePath;

        foreach (scandir($path) as $file) {
            if (in_array($file, ['.', '..'])) {
                continue;
            }

            $filePath = $path . $file;
            $relativeFilePath = $relativePath . $file;

            if (is_dir($filePath)) {
                $zip->addEmptyDir($relativeFilePath);
                $this->addToZip($basePath, $relativePath . $file . DIRECTORY_SEPARATOR, $zip);
            } else {
                $zip->addFile($filePath, $relativeFilePath);
            }
        }
    }
}