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<?php
/*
 * PHP: Recursively Backup Files & Folders to ZIP-File
 * (c) 2012-2014: Marvin Menzerath - http://menzerath.eu
*/

// Make sure the script can handle large folders/files
ini_set('max_execution_time', 600);
ini_set('memory_limit','1024M');

// Start the backup!
zipData('/path/to/folder', '/path/to/backup.zip');
echo 'Finished.';

// Here the magic happens :)
function zipData($folder, $zipTo) {
	if (extension_loaded('zip')) {
		if (file_exists($source)) {
			$zip = new ZipArchive();
			if ($zip->open($destination, ZIPARCHIVE::CREATE)) {
				$source = realpath($source);
				if (is_dir($source)) {
					$files = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($source), RecursiveIteratorIterator::SELF_FIRST);
					foreach ($files as $file) {
						$file = realpath($file);
						if (is_dir($file)) {
							$zip->addEmptyDir(str_replace($source . '/', '', $file . '/'));
						} else if (is_file($file)) {
							$zip->addFromString(str_replace($source . '/', '', $file), file_get_contents($file));
						}
					}
				} else if (is_file($source)) {
					$zip->addFromString(basename($source), file_get_contents($source));
				}
			}
			return $zip->close();
		}
	}
	return false;
}
?>