php web下载网站代码

1. 打包代码, 并直接通过浏览器下载

2. 解压zip文件到服务器

<?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;
}
//该片段来自于http://outofmemory.cn