Zip files recursively using ZipArchive class

phpzip.php

<?php

$rootPath = realpath('folder');
$zip = new ZipArchive();
$zip->open('archive.zip', ZipArchive::CREATE | ZipArchive::OVERWRITE);

$files = new RecursiveIteratorIterator(
    new RecursiveDirectoryIterator($rootPath),
    RecursiveIteratorIterator::LEAVES_ONLY
);


foreach ($files as $name => $file)
{
  // Skip directories (they would be added automatically)
  if (!$file->isDir())
  {
      // Get real and relative path for current file
      $filePath = $file->getRealPath();
      $relativePath = substr($filePath, strlen($rootPath) + 1);

      // Add current file to archive
      $zip->addFile($filePath, $relativePath);
  }
}

// Zip archive will be created only after closing object
$zip->close();

print_r('Done');