ecshop源码分析——静态缓存

来源：互联网发布：360文件恢复工具 mac 编辑：程序博客网时间：2024/05/18 01:08

tatic_caches缓存文件存放在ecshop/temp/static_caches下面

先来看缓存工作的2个主要函数，写缓存和读缓存。

该函数在ecshop/includes/lib_base.php

写缓存

Php代码

1. /**

2. * 将结果写进缓存文件

3. *

4. * @params string $cache_name 缓存文件的名字

5. * @params string $caches 缓存的内容

6. *

7. * @return

8. */

9. function write_static_cache($cache_name, $caches)

10. {

11. if ((DEBUG_MODE & 2) == 2)

12. {

13. return false;

14. }

15. //缓存的路径

16. $cache_file_path = ROOT_PATH . '/temp/static_caches/' . $cache_name . '.php';

17. //缓存内容$content

18. $content = "<?php/r/n";

19. $content .= "/$data = " . var_export($caches, true) . ";/r/n";

20. $content .= "?>";

21. //将内容写进缓存

22. file_put_contents($cache_file_path, $content, LOCK_EX);

23. }

读缓存

Php代码

1. /**

2. * 读结果缓存文件

3. *

4. * @params string $cache_name//缓存文件的名字

5. *

6. * @return array $data

7. */

8. function read_static_cache($cache_name)

9. {

10. if ((DEBUG_MODE & 2) == 2)

11. {

12. return false;

13. }

14. //注意这里的静态变量用法

15. static $result = array();

16. //如果已经从缓存文件中读取了数据则直接返回结果

17. if (!emptyempty($result[$cache_name]))

18. {

19. return $result[$cache_name];

20. }

21. //缓存文件的路径

22. $cache_file_path = ROOT_PATH . '/temp/static_caches/' . $cache_name . '.php';

23. //如果缓存文件存在就读取缓存

24. if (file_exists($cache_file_path))

25. {

26. include_once($cache_file_path);

27. $result[$cache_name] = $data;

28. return $result[$cache_name];

29. }

30. else

31. {

32. return false;

33. }

34. }

举一个ecshop中具体应用的例子来说明

ecshop/inlucdes/lib_goods.php

function get_recommend_goods首页中展示的新品推荐、热卖商品、今日特价就是从这里来的

Php代码

1. /**

2. * 获得推荐商品

3. *

4. * @access public

5. * @param string $type 推荐类型，可以是 best, new, hot

6. * @return array

7. */

8. //代码我省略了一些，主要说明与缓存相关的代码

9. */

10. function get_recommend_goods($type = '', $cats = '')

11. {

12. /* 省略的代码。。。。*/

13. /*读取缓存文件*/

14. $data = read_static_cache('recommend_goods');

15. if($data==false) //如果缓存文件不存在

16. {

17. /*从数据库中获取需要的数据*/

18. /*将从数据库中获取的数据写入到相应的缓存文件当中*/

19. write_static_cache('recommend_goods', $goods_data);

20. }else //如果缓存文件存在

21. {

22. /*直接使用缓存数据*/

23. $good_data=$data;

24. }

25. }

Java代码

1. //缓存结果在这里 <?php

2. $data = array (

3. 'best' =>

4. array (

5. 0 =>

6. array (

7. 'goods_id' => '33',

8. 'sort_order' => '0',

9. ),

10. 1 =>

11. array (

12. 'goods_id' => '19',

13. 'sort_order' => '0',

14. ),

15. 2 =>

16. array (

17. 'goods_id' => '24',

18. 'sort_order' => '0',

19. ),

20. 3 =>

21. array (

22. 'goods_id' => '20',

23. 'sort_order' => '0',

24. ),

25. 4 =>

26. array (

27. 'goods_id' => '22',

28. 'sort_order' => '0',

29. ),

30. 5 =>

31. array (

32. 'goods_id' => '8',

33. 'sort_order' => '0',

34. ),

35. 6 =>

36. array (

37. 'goods_id' => '23',

38. 'sort_order' => '0',

39. ),

40. 7 =>

41. array (

42. 'goods_id' => '9',

43. 'sort_order' => '0',

44. ),

45. 8 =>

46. array (

47. 'goods_id' => '1',

48. 'sort_order' => '0',

49. ),

50. 9 =>

51. array (

52. 'goods_id' => '17',

53. 'sort_order' => '0',

54. ),

55. 10 =>

56. array (

57. 'goods_id' => '27',

58. 'sort_order' => '0',

59. ),

60. 11 =>

61. array (

62. 'goods_id' => '30',

63. 'sort_order' => '0',

64. ),

65. 12 =>

66. array (

67. 'goods_id' => '25',

68. 'sort_order' => '0',

69. ),

70. 13 =>

71. array (

72. 'goods_id' => '29',

73. 'sort_order' => '0',

74. ),

75. 14 =>

76. array (

77. 'goods_id' => '5',

78. 'sort_order' => '0',

79. ),

80. ),

81. 'new' =>

82. array (

83. 0 =>

84. array (

85. 'goods_id' => '33',

86. 'sort_order' => '0',

87. ),

88. 1 =>

89. array (

90. 'goods_id' => '19',

91. 'sort_order' => '0',

92. ),

93. 2 =>

94. array (

95. 'goods_id' => '32',

96. 'sort_order' => '0',

97. ),

98. 3 =>

99. array (

100. 'goods_id' => '24',

101. 'sort_order' => '0',

102. ),

103. 4 =>

104. array (

105. 'goods_id' => '20',

106. 'sort_order' => '0',

107. ),

108. 5 =>

109. array (

110. 'goods_id' => '12',

111. 'sort_order' => '0',

112. ),

113. 6 =>

114. array (

115. 'goods_id' => '22',

116. 'sort_order' => '0',

117. ),

118. 7 =>

119. array (

120. 'goods_id' => '8',

121. 'sort_order' => '0',

122. ),

123. 8 =>

124. array (

125. 'goods_id' => '23',

126. 'sort_order' => '0',

127. ),

128. 9 =>

129. array (

130. 'goods_id' => '9',

131. 'sort_order' => '0',

132. ),

133. 10 =>

134. array (

135. 'goods_id' => '1',

136. 'sort_order' => '0',

137. ),

138. 11 =>

139. array (

140. 'goods_id' => '27',

141. 'sort_order' => '0',

142. ),

143. 12 =>

144. array (

145. 'goods_id' => '5',

146. 'sort_order' => '0',

147. ),

148. ),

149. 'hot' =>

150. array (

151. 0 =>

152. array (

153. 'goods_id' => '33',

154. 'sort_order' => '0',

155. ),

156. 1 =>

157. array (

158. 'goods_id' => '19',

159. 'sort_order' => '0',

160. ),

161. 2 =>

162. array (

163. 'goods_id' => '32',

164. 'sort_order' => '0',

165. ),

166. 3 =>

167. array (

168. 'goods_id' => '24',

169. 'sort_order' => '0',

170. ),

171. 4 =>

172. array (

173. 'goods_id' => '20',

174. 'sort_order' => '0',

175. ),

176. 5 =>

177. array (

178. 'goods_id' => '8',

179. 'sort_order' => '0',

180. ),

181. 6 =>

182. array (

183. 'goods_id' => '9',

184. 'sort_order' => '0',

185. ),

186. 7 =>

187. array (

188. 'goods_id' => '13',

189. 'sort_order' => '0',

190. ),

191. 8 =>

192. array (

193. 'goods_id' => '10',

194. 'sort_order' => '0',

195. ),

196. 9 =>

197. array (

198. 'goods_id' => '1',

199. 'sort_order' => '0',

200. ),

201. 10 =>

202. array (

203. 'goods_id' => '14',

204. 'sort_order' => '0',

205. ),

206. 11 =>

207. array (

208. 'goods_id' => '17',

209. 'sort_order' => '0',

210. ),

211. 12 =>

212. array (

213. 'goods_id' => '27',

214. 'sort_order' => '0',

215. ),

216. 13 =>

217. array (

218. 'goods_id' => '30',

219. 'sort_order' => '0',

220. ),

221. 14 =>

222. array (

223. 'goods_id' => '25',

224. 'sort_order' => '0',

225. ),

226. 15 =>

227. array (

228. 'goods_id' => '29',

229. 'sort_order' => '0',

230. ),

231. 16 =>

232. array (

233. 'goods_id' => '28',

234. 'sort_order' => '0',

235. ),

236. 17 =>

237. array (

238. 'goods_id' => '26',

239. 'sort_order' => '0',

240. ),

241. ),

242. 'brand' =>

243. array (

244. 33 => 'jk',

245. 19 => '三星',

246. 32 => '诺基亚',

247. 24 => '联想',

248. 20 => '三星',

249. 12 => '摩托罗拉',

250. 22 => '多普达',

251. 8 => '飞利浦',

252. 23 => '诺基亚',

253. 9 => '诺基亚',

254. 13 => '诺基亚',

255. 10 => '索爱',

256. 1 => 'LG',

257. 14 => '诺基亚',

258. 17 => '夏新',

259. 5 => '索爱',

260. ),

261. );

262. ?>