<?php
class Zip{
	function unzip($file){
		$dir = $_SERVER['DOCUMENT_ROOT']."/KAIHATSU/itojuku/log_processor/uploads/";
		$path = $dir.$file;
		$zip = new ZipArchive;
		$res = $zip->open($path);
		if ($res === true) {
			// extract it to the path we determined above
			$zip->extractTo($dir);
			$zip->close();
		} else {
			return false;
		}
	}

	function create_zip($files = array(),$destination = '',$overwrite = false) {
		//if the zip file already exists and overwrite is false, return false
		if(file_exists($destination) && !$overwrite) { return false; }
		//vars
		$valid_files = array();
		//if files were passed in...
		if(is_array($files)) {
			//cycle through each file
			foreach($files as $file) {
				//make sure the file exists
				if(file_exists($file)) {
					$valid_files[] = $file;
				}
			}
		}
		//if we have good files...
		if(count($valid_files)) {
			//create the archive
			$zip = new ZipArchive();
			if($zip->open($destination,$overwrite ? ZIPARCHIVE::OVERWRITE : ZIPARCHIVE::CREATE) !== true) {
				return false;
			}
			//add the files
			foreach($valid_files as $file) {
				$zip->addFile($file,$file);
			}
			//debug
			//echo 'The zip archive contains ',$zip->numFiles,' files with a status of ',$zip->status;

			//close the zip -- done!
			$zip->close();

			//check to make sure the file exists
			return file_exists($destination);
		}
		else
		{
			return false;
		}
	}
}

?>