Codeigniter多文件上传与缩略图实现代码

3. class Upload extends Controller {

4. function go() {
5. if(isset($_POST['go'])) {
6. //初始化
7. $config['upload_path'] = 'album/source';
8. $config['allowed_types'] = 'gif|jpg|png|bmp|jpeg';
9. $config['encrypt_name'] = TRUE;
10. $config['remove_spaces'] = TRUE;
11. $config['max_size'] = '0';
12. $config['max_width'] = '0';
13. $config['max_height'] = '0';

14. $this->load->library('upload', $config);

15. //170*170图片

16. $configThumb = array();
17. $configThumb['image_library'] = 'gd2';
18. $configThumb['source_image'] = '';
19. $configThumb['create_thumb'] = TRUE;
20. $configThumb['maintain_ratio'] = TRUE; //保持图片比例
21. $configThumb['new_image'] = 'album/thumb';
22. $configThumb['width'] = 170;
23. $configThumb['height'] = 170;
24. //600*600图片
25. $configLarge = array();
26. $configLarge['image_library'] = 'gd2';
27. $configLarge['source_image'] = '';
28. $configLarge['create_thumb'] = TRUE;
29. $configLarge['maintain_ratio'] = TRUE; //保持图片比例
30. $configLarge['new_image'] = 'album/large';
31. $configLarge['width'] = 600;
32. $configLarge['height'] = 600;

33. $this->load->library('image_lib');

34. for($i = 1; $i < 6; $i++) {

35. $upload = $this->upload->do_upload('image'.$i);
36. if($upload === FALSE) continue;
37. $data = $this->upload->data();//返回上传文件的所有相关信息的数组
38. $uid = $this->session->userdata('uid');
39. $uploadedFiles[$i] = $data;

40. if($data['is_image'] == 1) {

41. //初始化170*170
42. $configThumb['source_image'] = $data['full_path']; //文件路径带文件名
43. $this->image_lib->initialize($configThumb);
44. $this->image_lib->resize();
45. //初始化600*600
46. $configLarge['source_image'] = $data['full_path']; //文件路径带文件名
47. $this->image_lib->initialize($configLarge);
48. $this->image_lib->resize();
49. }

50. //插入图片信息到album表,插入的文件名为source目录文件名

51. $picture = array(
52. 'filename' => $data['file_name'],
53. 'albumID' => $this->uri->segment(4,0),
54. 'uid' => $this->session->userdata('uid'),
55. 'dateline' => time(),
56. 'describe' => '',
57. 'click' => 0
58. );

59. $this->load->model('album_model');

60. $this->album_model->AddPic($picture);
61. $picture = array();
62. }
63. }
64. /* 转出 */
65. $albumID = $this->uri->segment(4);
66. $backurl = site_url() . 'photo/editpic/album/' .$albumID;
67. $this->session->set_flashdata('msg','图片上传成功.');
68. redirect($backurl,'refresh');
69. }
70. }

2，views:new_pic.view文件：

2. 注意事项： 1，要一次上传几个文件，修改表单和控制器中循环部分的参数就好。 2，album\\source 是上传后原图目录 large和thumb分别是两次执行$this->image_lib->resize();后存放缩略图的目录。 3，缩略图文件名，如需和album\\source目录一致，请添加参数 $config['thumb_marker'] = '';。 4，$picture 这部分数组是保存到数据库的东西，无需理会。