PHP片段即时压缩zip文件

使用下面的 PHP 片段可以即时压缩 zip 文件

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

1. $files=array('file1.jpg', 'file2.jpg', 'file3.gif');
2. create_zip($files, 'myzipfile.zip', true);
3. ?>