web下载网站代码

<?php
/**
 * @author MarkZhao(zhaody901#126.com)
 */
$dir = dirname(__FILE__).'/';
// zip and download
// zip.php?type=zip&dir=subdir

// unzip deflate way zipped zip file
// zip.php?type=unzip&name=deflate

$type = $_GET['type'];
$type or exit('die no type to do!');
$name = isset($_GET['name']) ? $_GET['name'].'.zip' : 'zip.zip';
$subdir = $_GET['dir'];
$subdir or die('no sub dir to zip');
set_time_limit(0);
if ($type=='zip') {
	$zip = new ZipArchive();
	if ($zip->open($name, ZipArchive::CREATE) === TRUE) {
		$files = map($dir.$subdir);
		foreach ($files as $file) {
			$dir  = str_replace('\', '/', $dir);
			$file = str_replace('\', '/', $file);
			$zip->addFile($file, '_ROOT_/' . str_replace($dir, '', $file));
		}
		$zip->close();
		down($dir.$name);
		echo 'ok';
	} else {
		echo 'failed';
	}
} else if ($type=='unzip') {

	$zip = new ZipArchive();
	if ($zip->open($name) === TRUE) {
		$zip->extractTo(dirname(__FILE__).'/');
		$zip->close();
		echo 'ok';
	} else {
		echo 'failed';
	}
}


function map($directory) {
	$files = array();
	if (file_exists($directory) && is_dir($directory)) {
		foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($directory)) as $file) {
			$files[] = $file->getRealPath();
		}
	}
	return $files;
}

function down($file) {
	$filename = $filename ? $filename : basename($file);
	$filesize = filesize($file);
	ob_end_clean();
	@set_time_limit(0);
	if (strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false) {
		header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
		header('Pragma: public');
	} else {
		header('Pragma: no-cache');
	}
	header('Expires: ' . gmdate('D, d M Y H:i:s') . ' GMT');
	header('Content-Encoding: none');
	header('Content-Length: ' . $filesize);
	header('Content-Disposition: attachment; filename=' . $filename);
	header('Content-Type: ' . $filetype);
	readfile($file);
	exit;
}