PHP下载压缩包文件

压缩文件

 1 $zip = new ZipArchive();
 2 // 打开一个zip文档,ZipArchive::OVERWRITE:如果存在这样的文档,则覆盖;ZipArchive::CREATE:如果不存在,则创建
 3 $res = $zip->open('test.zip', ZipArchive::OVERWRITE | ZipArchive::CREATE);
 4 if($res)
 5 {
 6     // 添加 a.txt 到压缩文档
 7     $zip->addFile('a.txt');
 8     // 添加一个字符串到压缩文档中的b.txt
 9     $zip->addFromString('b.txt', 'this is b.txt');
10     // 添加一个空目录b到压缩文档
11     $zip->addEmptyDir('b');
12 }
13 // 关闭打开的压缩文档
14 $zip->close();

压缩目录

 1  1 /**
 2  2  * @param $dir 目标目录路径
 3  3  * @param $zip ZipArchive类对象
 4  4  * @param $prev
 5  5  */
 6  6 function compressDir($dir, $zip, $prev='.')
 7  7 {
 8  8     $handler = opendir($dir);
 9  9     $basename = basename($dir);
10 10     $zip->addEmptyDir($prev . '/' . $basename);
11 11     while($file = readdir($handler))
12 12     {
13 13         $realpath = $dir . '/' . $file;
14 14         if(is_dir($realpath))
15 15         {
16 16             if($file !== '.' && $file !== '..')
17 17             {
18 18                 $zip->addEmptyDir($prev . '/' . $basename . '/' . $file);
19 19                 compressDir($realpath, $zip, $prev . '/' . $basename);
20 20             }
21 21         }else
22 22         {
23 23             $zip->addFile($realpath, $prev. '/' . $basename . '/' . $file);
24 24         }
25 25     }
26 26 
27 27     closedir($handler);
28 28     return null;
29 29 }
30 30 
31 31 $zip = new ZipArchive();
32 32 $res = $zip->open('test.zip', ZipArchive::OVERWRITE | ZipArchive::CREATE);
33 33 if($res)
34 34 {
35 35     compressDir('./test', $zip);
36 36     $zip->close();
37 37 }

解压缩

1 $zip = new ZipArchive();
2 $res = $zip->open('test1.zip');
3 if($res)
4 {
5     // 解压缩文件到指定目录
6     $zip->extractTo('test');
7     $zip->close();
8 }

下载压缩包

1 header('Content-Type:text/html;charset=utf-8');
2 header('Content-disposition:attachment;filename=test.zip');
3 $filesize = filesize('./test.zip');
4 readfile('./test.zip');
5 header('Content-length:'.$filesize);
6 
7 unlink('./test.zip');

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转载自www.cnblogs.com/zgxblog/p/10132958.html