多文件上传是PHP中的一个基础应用,反正PHPer都会遇到的问题,现在就介绍一个功能完善、强大的多文件上传类给大家吧,能用上这个类的地方会很多,代码如下:

1. <?php
2. class Upload{
3. var $saveName;// 保存名
4. var $savePath;// 保存路径
5. var $fileFormat = array('gif','jpg','doc','application/octet-stream');// 文件格式&MIME限定
6. var $overwrite = 0;// 覆盖模式
7. var $maxSize = 0;// 文件最大字节
8. var $ext;// 文件扩展名
9. var $thumb = 0;// 是否生成缩略图
10. var $thumbWidth = 130;// 缩略图宽
11. var $thumbHeight = 130;// 缩略图高
12. var $thumbPrefix = "_thumb_";// 缩略图前缀
13. var $errno;// 错误代号
14. var $returnArray= array();// 所有文件的返回信息
15. var $returninfo= array();// 每个文件返回信息
16. // 构造函数
17. // @param $savePath 文件保存路径
18. // @param $fileFormat 文件格式限制数组
19. // @param $maxSize 文件最大尺寸
20. // @param $overwriet 是否覆盖 1 允许覆盖 0 禁止覆盖
21. function Upload($savePath, $fileFormat='',$maxSize = 0, $overwrite = 0) {
22. $this->setSavepath($savePath);
23. $this->setFileformat($fileFormat);
24. $this->setMaxsize($maxSize);
25. $this->setOverwrite($overwrite);
26. $this->setThumb($this->thumb, $this->thumbWidth,$this->thumbHeight);
27. $this->errno = 0;
28. }
29. // 上传
30. // @param $fileInput 网页Form(表单)中input的名称
31. // @param $changeName 是否更改文件名
32. function run($fileInput,$changeName = 1){
33. if(isset($_FILES[$fileInput])){
34. $fileArr = $_FILES[$fileInput];
35. if(is_array($fileArr['name'])){//上传同文件域名称多个文件
36. for($i = 0; $i < count($fileArr['name']); $i++){
37. $ar['tmp_name'] = $fileArr['tmp_name'][$i];
38. $ar['name'] = $fileArr['name'][$i];
39. $ar['type'] = $fileArr['type'][$i];
40. $ar['size'] = $fileArr['size'][$i];
41. $ar['error'] = $fileArr['error'][$i];
42. $this->getExt($ar['name']);//取得扩展名，赋给$this->ext，下次循环会更新
43. $this->setSavename($changeName == 1 ? '' : $ar['name']);//设置保存文件名
44. if($this->copyfile($ar)){
45. $this->returnArray[] = $this->returninfo;
46. }else{
47. $this->returninfo['error'] = $this->errmsg();
48. $this->returnArray[] = $this->returninfo;
49. }
50. }
51. return $this->errno ? false : true;
52. }else{//上传单个文件
53. $this->getExt($fileArr['name']);//取得扩展名
54. $this->setSavename($changeName == 1 ? '' : $fileArr['name']);//设置保存文件名
55. if($this->copyfile($fileArr)){
56. $this->returnArray[] = $this->returninfo;
57. }else{
58. $this->returninfo['error'] = $this->errmsg();
59. $this->returnArray[] = $this->returninfo;
60. }
61. return $this->errno ? false : true;
62. }
63. return false;
64. }else{
65. $this->errno = 10;
66. return false;
67. }
68. }
69. // 单个文件上传
70. // @param $fileArray 文件信息数组
71. function copyfile($fileArray){
72. $this->returninfo = array();
73. // 返回信息
74. $this->returninfo['name'] = $fileArray['name'];
75. $this->returninfo['md5'] = @md5_file($fileArray['tmp_name']);
76. $this->returninfo['saveName'] = $this->saveName;
77. $this->returninfo['size'] = number_format( ($fileArray['size'])/1024 , 0, '.', ' ');//以KB为单位
78. $this->returninfo['type'] = $fileArray['type'];
79. // 检查文件格式
80. if (!$this->validateFormat()){
81. $this->errno = 11;
82. return false;
83. }
84. // 检查目录是否可写
85. if(!@is_writable($this->savePath)){
86. $this->errno = 12;
87. return false;
88. }
89. // 如果不允许覆盖，检查文件是否已经存在
90. //if($this->overwrite == 0 && @file_exists($this->savePath.$fileArray['name'])){
91. // $this->errno = 13;
92. // return false;
93. //}
94. // 如果有大小限制，检查文件是否超过限制
95. if ($this->maxSize != 0 ){
96. if ($fileArray["size"] > $this->maxSize){
97. $this->errno = 14;
98. return false;
99. }
100. }
101. // 文件上传
102. if(!@move_uploaded_file($fileArray["tmp_name"], $this->savePath.$this->saveName)){
103. $this->errno = $fileArray["error"];
104. return false;
105. }elseif( $this->thumb ){// 创建缩略图
106. $CreateFunction = "imagecreatefrom".($this->ext == 'jpg' ? 'jpeg' : $this->ext);
107. $SaveFunction = "image".($this->ext == 'jpg' ? 'jpeg' : $this->ext);
108. if (strtolower($CreateFunction) == "imagecreatefromgif"
109. && !function_exists("imagecreatefromgif")) {
110. $this->errno = 16;
111. return false;
112. } elseif (strtolower($CreateFunction) == "imagecreatefromjpeg"
113. && !function_exists("imagecreatefromjpeg")) {
114. $this->errno = 17;
115. return false;
116. } elseif (!function_exists($CreateFunction)) {
117. $this->errno = 18;
118. return false;
119. }
120. $Original = @$CreateFunction($this->savePath.$this->saveName);
121. if (!$Original) {$this->errno = 19; return false;}
122. $originalHeight = ImageSY($Original);
123. $originalWidth = ImageSX($Original);
124. $this->returninfo['originalHeight'] = $originalHeight;
125. $this->returninfo['originalWidth'] = $originalWidth;
126. /*
127. if (($originalHeight < $this->thumbHeight
128. && $originalWidth < $this->thumbWidth)) {
129. // 如果比期望的缩略图小，那只Copy
130. move_uploaded_file($this->savePath.$this->saveName,
131. $this->savePath.$this->thumbPrefix.$this->saveName);
132. } else {
133. if( $originalWidth > $this->thumbWidth ){// 宽 > 设定宽度
134. $thumbWidth = $this->thumbWidth ;
135. $thumbHeight = $this->thumbWidth * ( $originalHeight / $originalWidth );
136. if($thumbHeight > $this->thumbHeight){// 高 > 设定高度
137. $thumbWidth = $this->thumbHeight * ( $thumbWidth / $thumbHeight );
138. $thumbHeight = $this->thumbHeight ;
139. }
140. }elseif( $originalHeight > $this->thumbHeight ){// 高 > 设定高度
141. $thumbHeight = $this->thumbHeight ;
142. $thumbWidth = $this->thumbHeight * ( $originalWidth / $originalHeight );
143. if($thumbWidth > $this->thumbWidth){// 宽 > 设定宽度
144. $thumbHeight = $this->thumbWidth * ( $thumbHeight / $thumbWidth );
145. $thumbWidth = $this->thumbWidth ;
146. }
147. }
148. */
149. $radio=max(($originalWidth/$this->thumbWidth),($originalHeight/$this->thumbHeight));
150. $thumbWidth=(int)$originalWidth/$radio;
151. $thumbHeight=(int)$originalHeight/$radio;
152. if ($thumbWidth == 0) $thumbWidth = 1;
153. if ($thumbHeight == 0) $thumbHeight = 1;
154. $createdThumb = imagecreatetruecolor($thumbWidth, $thumbHeight);
155. if ( !$createdThumb ) {$this->errno = 20; return false;}
156. if ( !imagecopyresampled($createdThumb, $Original, 0, 0, 0, 0,
157. $thumbWidth, $thumbHeight, $originalWidth, $originalHeight) )
158. {$this->errno = 21; return false;}
159. if ( !$SaveFunction($createdThumb,
160. $this->savePath.$this->thumbPrefix.$this->saveName) )
161. {$this->errno = 22; return false;}
162. }
163. // 删除临时文件
164. /*
165. if(!@$this->del($fileArray["tmp_name"])){
166. return false;
167. }
168. */
169. return true;
170. }
171. // 文件格式检查,MIME检测
172. function validateFormat(){
173. if(!is_array($this->fileFormat)
174. || in_array(strtolower($this->ext), $this->fileFormat)
175. || in_array(strtolower($this->returninfo['type']), $this->fileFormat) )
176. return true;
177. else
178. return false;
179. }
180. // 获取文件扩展名
181. // @param $fileName 上传文件的原文件名
182. function getExt($fileName){
183. $ext = explode(".", $fileName);
184. $ext = $ext[count($ext) - 1];
185. $this->ext = strtolower($ext);
186. }
187. // 设置上传文件的最大字节限制
188. // @param $maxSize 文件大小(bytes) 0:表示无限制
189. function setMaxsize($maxSize){
190. $this->maxSize = $maxSize;
191. }
192. // 设置文件格式限定
193. // @param $fileFormat 文件格式数组
194. function setFileformat($fileFormat){
195. if(is_array($fileFormat)){$this->fileFormat = $fileFormat ;}
196. }
197. // 设置覆盖模式
198. // @param overwrite 覆盖模式 1:允许覆盖 0:禁止覆盖
199. function setOverwrite($overwrite){
200. $this->overwrite = $overwrite;
201. }
202. // 设置保存路径
203. // @param $savePath 文件保存路径：以 "/" 结尾，若没有 "/"，则补上
204. function setSavepath($savePath){
205. $this->savePath = substr( str_replace("\","/", $savePath) , -1) == "/"
206. ? $savePath : $savePath."/";
207. }
208. // 设置缩略图
209. // @param $thumb = 1 产生缩略图 $thumbWidth,$thumbHeight 是缩略图的宽和高
210. function setThumb($thumb, $thumbWidth = 0,$thumbHeight = 0){
211. $this->thumb = $thumb;
212. if($thumbWidth) $this->thumbWidth = $thumbWidth;
213. if($thumbHeight) $this->thumbHeight = $thumbHeight;
214. }
215. // 设置文件保存名
216. // @param $saveName 保存名，如果为空，则系统自动生成一个随机的文件名
217. function setSavename($saveName){
218. if ($saveName == ''){ // 如果未设置文件名，则生成一个随机文件名
219. $name = date('YmdHis')."_".rand(100,999).'.'.$this->ext;
220. //判断文件是否存在,不允许重复文件
221. if(file_exists($this->savePath . $name)){
222. $name = setSavename($saveName);
223. }
224. } else {
225. $name = $saveName;
226. }
227. $this->saveName = $name;
228. }
229. // 删除文件
230. // @param $fileName 所要删除的文件名
231. function del($fileName){
232. if(!@unlink($fileName)){
233. $this->errno = 15;
234. return false;
235. }
236. return true;
237. }
238. // 返回上传文件的信息
239. function getInfo(){
240. return $this->returnArray;
241. }
242. // 得到错误信息
243. function errmsg(){
244. $uploadClassError = array(
245. 0 =>'There is no error, the file uploaded with success. ',
246. 1 =>'The uploaded file exceeds the upload_max_filesize directive in php.ini.',
247. 2 =>'The uploaded file exceeds the MAX_FILE_SIZE that was specified in the HTML form.',
248. 3 =>'The uploaded file was only partially uploaded. ',
249. 4 =>'No file was uploaded. ',
250. 6 =>'Missing a temporary folder. Introduced in PHP 4.3.10 and PHP 5.0.3. ',
251. 7 =>'Failed to write file to disk. Introduced in PHP 5.1.0. ',
252. 10 =>'Input name is not unavailable!',
253. 11 =>'The uploaded file is Unallowable!',
254. 12 =>'Directory unwritable!',
255. 13 =>'File exist already!',
256. 14 =>'File is too big!',
257. 15 =>'Delete file unsuccessfully!',
258. 16 =>'Your version of PHP does not appear to have GIF thumbnailing support.',
259. 17 =>'Your version of PHP does not appear to have JPEG thumbnailing support.',
260. 18 =>'Your version of PHP does not appear to have pictures thumbnailing support.',
261. 19 =>'An error occurred while attempting to copy the source image .
262. Your version of php ('.phpversion().') may not have this image type support.',
263. 20 =>'An error occurred while attempting to create a new image.',
264. 21 =>'An error occurred while copying the source image to the thumbnail image.',
265. 22 =>'An error occurred while saving the thumbnail image to the filesystem.
266. Are you sure that PHP has been configured with both read and write access on this folder?',
267. );
268. if ($this->errno == 0)
269. return false;
270. else
271. return $uploadClassError[$this->errno];
272. }
273. }
274. ?>
275. 如何使用这个类呢？
276. <?php
277. //如果收到表单传来的参数，则进行上传处理，否则显示表单
278. if(isset($_FILES['uploadinput'])){
279. //建目录函数，其中参数$directoryName最后没有"/"，
280. //要是有的话，以'/'打散为数组的时候，最后将会出现一个空值
281. function makeDirectory($directoryName) {
282. $directoryName = str_replace("\","/",$directoryName);
283. $dirNames = explode('/', $directoryName);
284. $total = count($dirNames) ;
285. $temp = '';
286. for($i=0; $i<$total; $i++) {
287. $temp .= $dirNames[$i].'/';
288. if (!is_dir($temp)) {
289. $oldmask = umask(0);
290. if (!mkdir($temp, 0777)) exit("不能建立目录 $temp");
291. umask($oldmask);
292. }
293. }
294. return true;
295. }
296. if($_FILES['uploadinput']['name'] <> ""){
297. //包含上传文件类
298. require_once ('upload_class.php');
299. //设置文件上传目录
300. $savePath = "upload";
301. //创建目录
302. makeDirectory($savePath);
303. //允许的文件类型
304. $fileFormat = array('gif','jpg','jpge','png');
305. //文件大小限制，单位: Byte，1KB = 1000 Byte
306. //0 表示无限制，但受php.ini中upload_max_filesize设置影响
307. $maxSize = 0;
308. //覆盖原有文件吗？ 0 不允许 1 允许
309. $overwrite = 0;
310. //初始化上传类
311. $f = new Upload( $savePath, $fileFormat, $maxSize, $overwrite);
312. //如果想生成缩略图，则调用成员函数 $f->setThumb();
313. //参数列表: setThumb($thumb, $thumbWidth = 0,$thumbHeight = 0)
314. //$thumb=1 表示要生成缩略图，不调用时，其值为 0
315. //$thumbWidth 缩略图宽，单位是像素(px)，留空则使用默认值 130
316. //$thumbHeight 缩略图高，单位是像素(px)，留空则使用默认值 130
317. $f->setThumb(1);
318. //参数中的uploadinput是表单中上传文件输入框input的名字
319. //后面的0表示不更改文件名，若为1，则由系统生成随机文件名
320. if (!$f->run('uploadinput',1)){
321. //通过$f->errmsg()只能得到最后一个出错的信息，
322. //详细的信息在$f->getInfo()中可以得到。
323. echo $f->errmsg()."<br>n";
324. }
325. //上传结果保存在数组returnArray中。
326. echo "<pre>";
327. print_r($f->getInfo());
328. echo "</pre>";
329. }
330. }else{
331. ?>
332. <form enctype="multipart/form-data" action="" method="POST">
333. Send this file: <br />
334. <input name="uploadinput[]" type="file"><br />
335. <input name="uploadinput[]" type="file"><br />
336. <input name="uploadinput[]" type="file"><br />
337. <input type="submit" value="Send File"><br />
338. </form>
339. <?php
340. }
341. ?>