1. <?php
2. class My_Lib_simpleimage {
3. var $image;
4. var $image_type;
5. function load($filename) {
6. //$filename 文件的临时文件名 $_FILES['name']['tmp_name']
7. $image_info = getimagesize($filename);
8. $this->image_type = $image_info[2];
9. if( $this->image_type == IMAGETYPE_JPEG ) {
10. $this->image = imagecreatefromjpeg($filename);
11. } elseif( $this->image_type == IMAGETYPE_GIF ) {
12. $this->image = imagecreatefromgif($filename);
13. } elseif( $this->image_type == IMAGETYPE_PNG ) {
14. $this->image = imagecreatefrompng($filename);
15. }
16. }
17. function save($filename, $image_type=IMAGETYPE_JPEG, $compression=75, $permissions=null) {
18. if( $image_type == IMAGETYPE_JPEG ) {
19. imagejpeg($this->image,$filename,$compression);
20. } elseif( $image_type == IMAGETYPE_GIF ) {
21. imagegif($this->image,$filename);
22. } elseif( $image_type == IMAGETYPE_PNG ) {
23. imagepng($this->image,$filename);
24. }
25. if( $permissions != null) {
26. chmod($filename,$permissions);
27. }
28. }
29. function output($image_type=IMAGETYPE_JPEG) {
30. if( $image_type == IMAGETYPE_JPEG ) {
31. imagejpeg($this->image);
32. } elseif( $image_type == IMAGETYPE_GIF ) {
33. imagegif($this->image);
34. } elseif( $image_type == IMAGETYPE_PNG ) {
35. imagepng($this->image);
36. }
37. } //开源代码phpfensi.com
38. function getWidth() {
39. return imagesx($this->image);
40. }
41. function getHeight() {
42. return imagesy($this->image);
43. }
44. #设置缩略图片高度
45. function resizeToHeight($height) {
46. $ratio = $height / $this->getHeight();
47. $width = $this->getWidth() * $ratio;
48. $this->resize($width,$height);
49. }
50. #设置缩略图片宽度
51. function resizeToWidth($width) {
52. $ratio = $width / $this->getWidth();
53. $height = $this->getheight() * $ratio;
54. $this->resize($width,$height);
55. }
56. function scale($scale) {
57. $width = $this->getWidth() * $scale/100;
58. $height = $this->getheight() * $scale/100;
59. $this->resize($width,$height);
60. }
61. function resize($width,$height) {
62. $new_image = imagecreatetruecolor($width, $height);
63. imagecopyresampled($new_image, $this->image, 0, 0, 0, 0, $width, $height, $this->getWidth(), $this->getHeight());
64. $this->image = $new_image;
65. }
66. }
67. ?>