PHP在线压缩zip的函数代码

2. /* PHP创建zip压缩包 */
3. function create_zip($files = array(),$destination = '',$overwrite = false) {
4. //if the zip file already exists and overwrite is false, return false
5. if(file_exists($destination) && !$overwrite) { return false; }
6. //vars
7. $valid_files = array();
8. //if files were passed in...
9. if(is_array($files)) {
10. //cycle through each file
11. foreach($files as $file) {
12. //make sure the file exists
13. if(file_exists($file)) {
14. $valid_files[] = $file;
15. }
16. }
17. }
18. //if we have good files...
19. if(count($valid_files)) {
20. //create the archive
21. $zip = new ZipArchive();
22. if($zip->open($destination,$overwrite ? ZIPARCHIVE::OVERWRITE : ZIPARCHIVE::CREATE) !== true) {
23. return false;
24. }
25. //add the files
26. foreach($valid_files as $file) {
27. $zip->addFile($file,$file);
28. }
29. //debug
30. //echo 'The zip archive contains ',$zip->numFiles,' files with a status of ',$zip->status;
31. //close the zip -- done!
32. $zip->close();
33. //check to make sure the file exists
34. return file_exists($destination);
35. }
36. else
37. {
38. return false;
39. }
40. }
41. /***** 应用实例 ***/
42. $files=array('1.php', 'mail.php', 'readme.txt');
43. create_zip($files, 'myzipfile.zip', true);
44. ?>

复制代码