PHP 反射机制详解 以及插件架构实现
http://www.e897.com/Article/wlbc/php/200908/5377.html1. /**
2. * @name PHP反射API--利用反射技术实现的插件系统架构
3. * @author :PHPCQ.COM
4. */
5. interface Iplugin{
6. public static function getName();
7. }
8. function findPlugins(){
9. $plugins = array();
10. foreach (get_declared_classes() as $class){
11. $reflectionClass = new ReflectionClass($class);
12. if ($reflectionClass->implementsInterface('Iplugin')) {
13. $plugins[] = $reflectionClass;
14. }
15. }
16. return $plugins;
17. }
18. function computeMenu(){
19. $menu = array();
20. foreach (findPlugins() as $plugin){
21. if ($plugin->hasMethod('getMenuItems')) {
22. $reflectionMethod = $plugin->getMethod('getMenuItems');
23. if ($reflectionMethod->isStatic()) {
24. $items = $reflectionMethod->invoke(null);
25. } else {
26. $pluginInstance = $plugin->newInstance();
27. $items = $reflectionMethod->invoke($pluginInstance);
28. }
29. $menu = array_merge($menu,$items);
30. }
31. }
32. return $menu;
33. }
34. function computeArticles(){
35. $articles = array();
36. foreach (findPlugins() as $plugin){
37. if ($plugin->hasMethod('getArticles')) {
38. $reflectionMethod = $plugin->getMethod('getArticles');
39. if ($reflectionMethod->isStatic()) {
40. $items = $reflectionMethod->invoke(null);
41. } else {
42. $pluginInstance = $plugin->newInstance();
43. $items = $reflectionMethod->invoke($pluginInstance);
44. }
45. $articles = array_merge($articles,$items);
46. }
47. }
48. return $articles;
49. }
50. require_once('plugin.php');
51. $menu = computeMenu();
52. $articles = computeArticles();
53. print_r($menu);
54. print_r($articles);
55.
56.
57. //plugin.php 代码如下
58.
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