Core.php 19 KB

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  1. <?php
  2. namespace Upload\Lib\Store;
  3. use Dever;
  4. use Dever\String\Helper as Helper;
  5. use Dever\Loader\Config;
  6. use Dever\Support\Img;
  7. class Core
  8. {
  9. protected $data;
  10. protected $config;
  11. protected $handle;
  12. protected $img;
  13. protected $output;
  14. protected $limit;
  15. protected $name;
  16. protected $path;
  17. protected $ext = '';
  18. protected $file;
  19. protected $size;
  20. protected $base = '';
  21. protected $base64 = false;
  22. protected $yun = false;
  23. protected $id = false;
  24. /**
  25. * __construct
  26. *
  27. * @return mixed
  28. */
  29. public function __construct($config, $data = array())
  30. {
  31. $this->data = $data;
  32. $this->config = $config;
  33. }
  34. public function getData()
  35. {
  36. return $this->data;
  37. }
  38. /**
  39. * 获取根目录
  40. *
  41. * @return mixed
  42. */
  43. protected function root()
  44. {
  45. if (!$this->base) {
  46. $path = Config::data();
  47. $this->base = Dever::path($path . 'upload/');
  48. }
  49. return $this->base;
  50. }
  51. /**
  52. * 验证数据
  53. *
  54. * @return mixed
  55. */
  56. private function check($param)
  57. {
  58. foreach ($param as $k => $v) {
  59. $method = 'check_' . $v;
  60. $this->$method();
  61. if ($this->output['status'] == -1) {
  62. break;
  63. }
  64. }
  65. }
  66. /**
  67. * 验证key是否包含有后续处理的方法
  68. *
  69. * @return mixed
  70. */
  71. private function check_handle()
  72. {
  73. if (isset($this->data['key']) && strpos($this->data['key'], '_') !== false) {
  74. $temp = explode('_', $this->data['key']);
  75. $this->data['key'] = $temp[0];
  76. unset($temp[0]);
  77. foreach ($temp as $k => $v) {
  78. $this->handle[] = explode('=', $v);
  79. }
  80. }
  81. }
  82. /**
  83. * 验证文件是否存在
  84. *
  85. * @return mixed
  86. */
  87. private function check_file()
  88. {
  89. if ($this->data['file']['tmp_name'] == '') {
  90. $this->output['status'] = -1;
  91. $this->output['message'] = '没有选择文件';
  92. }
  93. }
  94. /**
  95. * 验证基本配置
  96. *
  97. * @return mixed
  98. */
  99. private function check_key()
  100. {
  101. if (trim($this->data['key']) == '') {
  102. $this->output['status'] = -1;
  103. $this->output['message'] = '请添加配置key';
  104. }
  105. /*
  106. else {
  107. $this->config = Dever::load('upload/upload-one', $this->data['key']);
  108. if (!$this->config) {
  109. $this->output['status'] = -1;
  110. $this->output['message'] = '此配置不存在';
  111. }
  112. }
  113. */
  114. }
  115. /**
  116. * 验证文件类型
  117. *
  118. * @return mixed
  119. */
  120. private function check_type()
  121. {
  122. if (!$this->ext) {
  123. $ext = $this->getExt($this->data['file']['tmp_name']);
  124. if (strpos($this->config['type'], $ext) === false) {
  125. $this->output['status'] = -1;
  126. $this->output['message'] = '文件格式不符合要求';
  127. }
  128. $this->ext = '.' . $ext;
  129. }
  130. }
  131. /**
  132. * 验证文件大小
  133. *
  134. * @return mixed
  135. */
  136. private function check_size()
  137. {
  138. if (!$this->limit) {
  139. $this->limit = getimagesize($this->data['file']['tmp_name']);
  140. }
  141. # 默认30M
  142. $size = $this->config['size'] > 0 ? 1024*1024*$this->config['size'] : 30*1024*1024;
  143. if (isset($this->data['file']['size'])) {
  144. $this->size = $this->data['file']['size'];
  145. if (($size < $this->data['file']['size']) && $size > 0) {
  146. $this->output['status'] = -1;
  147. $this->output['message'] = '文件不能超过'.(($size/1024)/1024).'MB';
  148. } elseif ($this->config['width'] > 0 && $this->config['width'] < $this->limit[0]) {
  149. $this->output['status'] = -1;
  150. $this->output['message'] = '图片宽度不能超过' . $this->config['width'] . 'px';
  151. } elseif ($this->config['height'] > 0 && $this->config['height'] < $this->limit[1]) {
  152. $this->output['status'] = -1;
  153. $this->output['message'] = '图片高度不能超过' . $this->config['height'] . 'px';
  154. }
  155. $this->size = number_format($this->size/1024, 2);
  156. }
  157. }
  158. /**
  159. * 上传操作
  160. *
  161. * @return mixed
  162. */
  163. public function copy()
  164. {
  165. $this->output['status'] = 1;
  166. if (is_string($this->data['file'])) {
  167. if (strstr($this->data['file'], 'base64,') && isset($this->data['pic'])) {
  168. $temp = explode('base64,', $this->data['file']);
  169. $type = str_replace(array('data:', ';'), '', $temp[0]);
  170. $file = str_replace(' ', '+', $temp[1]);
  171. $file = str_replace('=', '', $temp[1]);
  172. $file = base64_decode($file);
  173. $name = $this->data['local'] = Dever::local($this->data['pic']);
  174. $size = strlen($file);
  175. $size = number_format(($size - ($size/8)*2)/1024, 2);
  176. $this->base64 = true;
  177. } else {
  178. $name = urldecode($this->data['file']);
  179. }
  180. $this->data['file'] = array();
  181. if (((isset($this->data['cropper']) && !$this->yun) || !isset($this->data['cropper'])) && strstr($name, 'http')) {
  182. $this->base64 = false;
  183. $this->root();
  184. header('Content-type: text/json; charset=utf-8');
  185. $path = Dever::path($this->base, 'tmp/');
  186. $ext = $name;
  187. if (strstr($name, '?')) {
  188. $temp = explode('?', $ext);
  189. $ext = $temp[0];
  190. }
  191. $this->ext = '.' . pathinfo($ext, PATHINFO_EXTENSION);
  192. $this->data['file']['name'] = 'Tmp' . sha1($name);
  193. $this->data['file']['tmp_name'] = $path . $this->data['file']['name'];
  194. if (!is_file($this->data['file']['tmp_name'])) {
  195. if (strstr($name, 'tp=webp')) {
  196. $name = str_replace('tp=webp', 'tp=jpeg', $name);
  197. } elseif (strstr($name, '.webp')) {
  198. $name = str_replace('.webp', '.jpg', $name);
  199. }
  200. if (!isset($file)) {
  201. $file = Dever::curl($name);
  202. }
  203. if (stristr($file, 'webp')) {
  204. # 将webp图片转成jpg
  205. $this->ext = '.jpg';
  206. }
  207. if (!isset($file)) {
  208. Dever::alert('错误的文件来源');
  209. }
  210. file_put_contents($this->data['file']['tmp_name'], $file);
  211. }
  212. $this->data['file']['size'] = filesize($this->data['file']['tmp_name']);
  213. } elseif (isset($file)) {
  214. $this->data['file']['name'] = $name;
  215. $this->data['file']['tmp_name'] = $file;
  216. } else {
  217. $this->data['file']['name'] = $name;
  218. $this->data['file']['tmp_name'] = $name;
  219. }
  220. if (isset($type)) {
  221. $this->data['file']['type'] = $type;
  222. }
  223. if (isset($size)) {
  224. $this->data['file']['size'] = $size;
  225. }
  226. if (isset($this->data['param'])) {
  227. $this->limit = array($this->data['param']['param_w'], $this->data['param']['param_h']);
  228. if (isset($this->data['name'])) {
  229. $param = implode('_', array_values($this->data['param']));
  230. $this->data['file']['name'] = '.' . $this->data['name'] . $param;
  231. if ($this->base64) {
  232. $this->data['name'] = $this->data['file']['name'];
  233. } else {
  234. $filename = md5($this->data['pic']) . '.' . pathinfo($this->data['pic'], PATHINFO_EXTENSION);
  235. $this->path();
  236. $file = $this->base . $this->data['key'] . $this->path . $filename;
  237. if (!is_file($file)) {
  238. $content = Dever::curl($name);
  239. file_put_contents($file, $content);
  240. }
  241. $this->data['name'] = $filename . $this->data['file']['name'];
  242. }
  243. $this->ext = '.jpg';
  244. }
  245. }
  246. } else {
  247. header("Content-type: application/json; charset=utf-8");
  248. }
  249. $this->check(array('handle', 'file', 'key', 'type', 'size'));
  250. if ($this->output['status'] == -1) {
  251. $this->delete();
  252. return $this->output;
  253. }
  254. $this->save();
  255. if ($this->output['status'] == -1) {
  256. return $this->output;
  257. }
  258. if (isset($this->handle) && is_array($this->handle)) {
  259. foreach ($this->handle as $k => $v) {
  260. $method = 'handle_' . $v[0];
  261. if (method_exists($this, $method)) {
  262. $this->$method($v);
  263. }
  264. $this->$method($v[1]);
  265. }
  266. } elseif (isset($this->config['alter']) && $this->config['alter']) {
  267. parse_str($this->config['alter'], $handle);
  268. if ($handle) {
  269. foreach ($handle as $k => $v) {
  270. $method = 'handle_' . $k;
  271. if (method_exists($this, $method)) {
  272. $this->$method($v);
  273. }
  274. }
  275. }
  276. }
  277. $this->output['uploaded'] = true;
  278. $this->output['status'] = 1;
  279. $this->output['name'] = $this->data['file']['name'];
  280. $this->output['fid'] = $this->id;
  281. if ($this->limit) {
  282. $this->output['width'] = $this->limit[0];
  283. $this->output['height'] = $this->limit[1];
  284. }
  285. if ($this->size) {
  286. $this->output['size'] = $this->size;
  287. }
  288. return $this->output;
  289. }
  290. protected function update($id)
  291. {
  292. $param['set_name'] = $this->name;
  293. $param['set_source_name'] = $this->data['file']['name'];
  294. $param['set_file'] = $this->file;
  295. $param['set_key'] = md5($this->output['url']);
  296. $param['set_ext'] = $this->ext;
  297. if (isset($this->data['cate'])) {
  298. $param['set_cate'] = $this->data['cate'];
  299. }
  300. if ($this->limit) {
  301. $param['set_width'] = $this->limit[0];
  302. $param['set_height'] = $this->limit[1];
  303. }
  304. if ($this->size) {
  305. $param['set_size'] = $this->size;
  306. }
  307. if (isset($this->data['search']) && $this->data['search']) {
  308. $param['search'] = $this->data['search'];
  309. }
  310. $this->id = $param['where_id'] = $id;
  311. Dever::db('upload/file')->update($param);
  312. }
  313. protected function insert()
  314. {
  315. $param['add_name'] = $this->name;
  316. $param['add_source_name'] = $this->data['file']['name'];
  317. $param['add_file'] = $this->file;
  318. $param['add_key'] = md5($this->output['url']);
  319. $param['add_ext'] = $this->ext;
  320. $param['add_upload'] = $this->data['key'];
  321. if (isset($this->data['cate'])) {
  322. $param['add_cate'] = $this->data['cate'];
  323. }
  324. if ($this->limit) {
  325. $param['add_width'] = $this->limit[0];
  326. $param['add_height'] = $this->limit[1];
  327. }
  328. if ($this->size) {
  329. $param['add_size'] = $this->size;
  330. }
  331. $param['add_state'] = 1;
  332. //file_put_contents(DEVER_PATH . 'data/test', var_export($param,true));
  333. if (isset($this->data['search']) && $this->data['search']) {
  334. $param['search'] = $this->data['search'];
  335. }
  336. $this->id = Dever::db('upload/file')->insert($param);
  337. }
  338. protected function img()
  339. {
  340. $this->img = isset($this->img) ? $this->img : new Img();
  341. $this->img->setType('im');
  342. return $this->img;
  343. }
  344. protected function getName()
  345. {
  346. $this->name($this->data['file']['name'])->path()->ext()->file();
  347. }
  348. protected function path()
  349. {
  350. # 覆盖原文件 检查文件是否存在
  351. $this->path = '';
  352. if ($this->config['cover'] == 1) {
  353. $info = Dever::db('upload/file')->one(array('name' => $this->name, 'upload' => $this->data['key']));
  354. if ($info && $info['file'] && strstr($info['file'], $this->name)) {
  355. # 如果存在,直接使用旧文件
  356. if (strstr($info['file'], 'http')) {
  357. $config = parse_url($info['file']);
  358. } else {
  359. $config['path'] = $info['file'];
  360. }
  361. $temp = explode($this->name, $config['path']);
  362. $this->path = ltrim($temp[0], '/');
  363. }
  364. }
  365. if (!$this->path) {
  366. $date = explode('-', date("Y-m-d"));
  367. $this->path = $this->config['id'] . '/' . $date[0] . '/' . $date[1] . '/' . $date[2] . '/';
  368. }
  369. return $this;
  370. }
  371. protected function name($name)
  372. {
  373. if (isset($this->data['name'])) {
  374. $this->name = $this->data['name'];
  375. } else {
  376. $this->name = md5($name);
  377. }
  378. return $this;
  379. }
  380. protected function ext()
  381. {
  382. $this->ext = $this->ext ? $this->ext : '.' . pathinfo($this->data['file']['name'], PATHINFO_EXTENSION);
  383. if ($this->ext == '.') {
  384. $this->ext = '.jpg';
  385. }
  386. return $this;
  387. }
  388. protected function yun()
  389. {
  390. $yun = $this->config['yun'];
  391. $this->host = $yun['host'];
  392. $this->data['host'] = $this->host;
  393. $this->getName();
  394. $file = $this->file;
  395. if ($this->config['cover'] == 3) {
  396. $this->name($this->output['file'] . '_' . microtime() . '_' . rand(0,1000))->file();
  397. $file = $this->file;
  398. }
  399. return array($yun, $file);
  400. }
  401. /**
  402. * getExt
  403. *
  404. * @return mixed
  405. */
  406. protected function getExt($filename)
  407. {
  408. if (isset($this->data['file']['type'])) {
  409. $ext = $this->getExtByMine($this->data['file']['type']);
  410. } elseif (function_exists('finfo_open')) {
  411. $finfo = finfo_open(FILEINFO_MIME); // 返回 mime 类型
  412. $code = finfo_file($finfo, $filename);
  413. finfo_close($finfo);
  414. $temp = explode(';', $code);
  415. $ext = $this->getExtByMine($temp[0]);
  416. } else {
  417. $ext = $this->getExtByByte($filename);
  418. }
  419. if (!$ext || $ext == 'txt' || $ext == 'exe') {
  420. if (isset($this->data['file']['type'])) {
  421. $ext = $this->getExtByMine($this->data['file']['type']);
  422. }
  423. if (!$ext || $ext == 'txt' || $ext == 'exe') {
  424. $ext = $this->getExtByByte($filename);
  425. }
  426. }
  427. return $ext;
  428. }
  429. public function delete()
  430. {
  431. @unlink($this->data['file']['tmp_name']);
  432. }
  433. /**
  434. * 根据mime类型获取文件扩展名
  435. *
  436. * @return mixed
  437. */
  438. protected function getExtByMine($mine)
  439. {
  440. $mine = trim($mine);
  441. $config = array
  442. (
  443. 'application/envoy' => 'evy',
  444. 'application/fractals' => 'fif',
  445. 'application/futuresplash' => 'spl',
  446. 'application/hta' => 'hta',
  447. 'application/internet-property-stream' => 'acx',
  448. 'application/mac-binhex40' => 'hqx',
  449. 'application/msword' => 'doc',
  450. 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' => 'xlsx',
  451. 'application/vnd.openxmlformats-officedocument.wordprocessingml.document' => 'docx',
  452. 'video/x-m4v' => 'mp4',
  453. 'video/mp4' => 'mp4',
  454. 'application/octet-stream' => 'exe',
  455. 'application/oda' => 'oda',
  456. 'application/olescript' => 'axs',
  457. 'application/pdf' => 'pdf',
  458. 'application/pics-rules' => 'prf',
  459. 'application/pkcs10' => 'p10',
  460. 'application/pkix-crl' => 'crl',
  461. 'application/postscript' => 'ai',
  462. 'application/postscript' => 'eps',
  463. 'application/postscript' => 'ps',
  464. 'application/rtf' => 'rtf',
  465. 'application/set-payment-initiation' => 'setpay',
  466. 'application/set-registration-initiation' => 'setreg',
  467. 'application/vnd.ms-excel' => 'xls',
  468. 'application/vnd.ms-outlook' => 'msg',
  469. 'application/vnd.ms-pkicertstore' => 'sst',
  470. 'application/vnd.ms-pkiseccat' => 'cat',
  471. 'application/vnd.ms-pkistl' => 'stl',
  472. 'application/vnd.ms-powerpoint' => 'ppt',
  473. 'application/vnd.ms-project' => 'mpp',
  474. 'application/vnd.ms-works' => 'wps',
  475. 'application/winhlp' => 'hlp',
  476. 'application/x-bcpio' => 'bcpio',
  477. 'application/x-cdf' => 'cdf',
  478. 'application/x-compress' => 'z',
  479. 'application/x-compressed' => 'tgz',
  480. 'application/x-cpio' => 'cpio',
  481. 'application/x-csh' => 'csh',
  482. 'application/x-director' => 'dir',
  483. 'application/x-dvi' => 'dvi',
  484. 'application/x-gtar' => 'gtar',
  485. 'application/x-gzip' => 'gz',
  486. 'application/x-hdf' => 'hdf',
  487. 'application/x-internet-signup' => 'isp',
  488. 'application/x-iphone' => 'iii',
  489. 'application/x-javascript' => 'js',
  490. 'application/x-latex' => 'latex',
  491. 'application/x-msaccess' => 'mdb',
  492. 'application/x-mscardfile' => 'crd',
  493. 'application/x-msclip' => 'clp',
  494. 'application/x-msdownload' => 'dll',
  495. 'application/x-msmediaview' => 'mvb',
  496. 'application/x-msmetafile' => 'wmf',
  497. 'application/x-msmoney' => 'mny',
  498. 'application/x-mspublisher' => 'pub',
  499. 'application/x-msschedule' => 'scd',
  500. 'application/x-msterminal' => 'trm',
  501. 'application/x-mswrite' => 'wri',
  502. 'application/x-netcdf' => 'cdf',
  503. 'application/x-netcdf' => 'nc',
  504. 'application/x-perfmon' => 'pma',
  505. 'application/x-pkcs12' => 'p12',
  506. 'application/x-pkcs12' => 'pfx',
  507. 'application/x-pkcs7-certificates' => 'p7b',
  508. 'application/x-pkcs7-certreqresp' => 'p7r',
  509. 'application/x-pkcs7-mime' => 'p7c',
  510. 'application/x-pkcs7-signature' => 'p7s',
  511. 'application/x-sh' => 'sh',
  512. 'application/x-shar' => 'shar',
  513. 'application/x-shockwave-flash' => 'swf',
  514. 'application/x-stuffit' => 'sit',
  515. 'application/x-sv4cpio' => 'sv4cpio',
  516. 'application/x-sv4crc' => 'sv4crc',
  517. 'application/x-tar' => 'tar',
  518. 'application/x-tcl' => 'tcl',
  519. 'application/x-tex' => 'tex',
  520. 'application/x-texinfo' => 'texi',
  521. 'application/x-texinfo' => 'texinfo',
  522. 'application/x-troff' => 'roff',
  523. 'application/x-troff' => 't',
  524. 'application/x-troff' => 'tr',
  525. 'application/x-troff-man' => 'man',
  526. 'application/x-troff-me' => 'me',
  527. 'application/x-troff-ms' => 'ms',
  528. 'application/x-ustar' => 'ustar',
  529. 'application/x-wais-source' => 'src',
  530. 'application/x-x509-ca-cert' => 'cer',
  531. 'application/ynd.ms-pkipko' => 'pko',
  532. 'application/zip' => 'zip',
  533. 'audio/basic' => 'au',
  534. 'audio/basic' => 'snd',
  535. 'audio/mid' => 'mid',
  536. 'audio/mid' => 'rmi',
  537. 'audio/mpeg' => 'mp3',
  538. 'audio/mp3' => 'mp3',
  539. 'audio/x-aiff' => 'aif',
  540. 'audio/x-aiff' => 'aifc',
  541. 'audio/x-aiff' => 'aiff',
  542. 'audio/x-mpegurl' => 'm3u',
  543. 'audio/x-pn-realaudio' => 'ram',
  544. 'audio/x-wav' => 'wav',
  545. 'image/bmp' => 'bmp',
  546. 'image/cis-cod' => 'cod',
  547. 'image/gif' => 'gif',
  548. 'image/ief' => 'ief',
  549. 'image/jpeg' => 'jpg',
  550. 'image/pipeg' => 'jfif',
  551. 'image/svg+xml' => 'svg',
  552. 'image/tiff' => 'tif',
  553. 'image/tiff' => 'tiff',
  554. 'image/x-cmu-raster' => 'ras',
  555. 'image/x-cmx' => 'cmx',
  556. 'image/x-icon' => 'ico',
  557. 'image/x-portable-anymap' => 'pnm',
  558. 'image/x-portable-bitmap' => 'pbm',
  559. 'image/x-portable-graymap' => 'pgm',
  560. 'image/x-portable-pixmap' => 'ppm',
  561. 'image/x-rgb' => 'rgb',
  562. 'image/x-xbitmap' => 'xbm',
  563. 'image/x-xpixmap' => 'xpm',
  564. 'image/x-xwindowdump' => 'xwd',
  565. 'message/rfc822' => 'mht',
  566. 'message/rfc822' => 'mhtml',
  567. 'message/rfc822' => 'nws',
  568. 'text/css' => 'css',
  569. 'text/h323' => '323',
  570. 'text/html' => 'html',
  571. 'text/iuls' => 'uls',
  572. 'text/plain' => 'txt',
  573. 'text/richtext' => 'rtx',
  574. 'text/scriptlet' => 'sct',
  575. 'text/tab-separated-values' => 'tsv',
  576. 'text/webviewhtml' => 'htt',
  577. 'text/x-component' => 'htc',
  578. 'text/x-setext' => 'etx',
  579. 'text/x-vcard' => 'vcf',
  580. 'video/mpeg' => 'mpeg',
  581. 'video/quicktime' => 'mov',
  582. 'video/x-ms-asf' => 'asx',
  583. 'video/x-msvideo' => 'avi',
  584. 'video/x-sgi-movie' => 'movie',
  585. 'x-world/x-vrml' => 'flr',
  586. 'application/x-rar' => 'rar',
  587. 'application/vnd.android.package-archive' => 'apk',
  588. 'audio/webm' => 'webm',
  589. 'video/webm' => 'webm',
  590. 'audio/x-m4a' => 'm4a',
  591. );
  592. if (isset($config[$mine])) {
  593. return $config[$mine];
  594. } else {
  595. return false;
  596. }
  597. }
  598. /**
  599. * getExt
  600. *
  601. * @return mixed
  602. */
  603. protected function getExtByByte($filename)
  604. {
  605. $file = fopen($filename,"rb");
  606. $bin = fread($file,2);
  607. fclose($file);
  608. $strInfo = @unpack("c2chars",$bin);
  609. $typeCode = intval($strInfo['chars1'].$strInfo['chars2']);
  610. $fileType = '';
  611. switch ($typeCode) {
  612. case 7790:
  613. $fileType = 'exe';
  614. break;
  615. case 7784:
  616. $fileType = 'midi';
  617. break;
  618. case 8297:
  619. $fileType = 'rar';
  620. break;
  621. case 255216:
  622. $fileType = 'jpg';
  623. break;
  624. case 7173:
  625. $fileType = 'gif';
  626. break;
  627. case 13780:
  628. $fileType = 'png';
  629. break;
  630. case 6677:
  631. $fileType = 'bmp';
  632. break;
  633. case 6787:
  634. $fileType = 'swf';
  635. break;
  636. case 6063;
  637. $fileType = 'php|xml';
  638. break;
  639. case 6033:
  640. $fileType = 'html|htm|shtml';
  641. break;
  642. case 8075:
  643. $fileType = 'zip';
  644. break;
  645. case 6782:
  646. case 1310:
  647. $fileType = 'txt';
  648. break;
  649. case 4742:
  650. $fileType = 'js';
  651. break;
  652. case 8273:
  653. $fileType = 'wav';
  654. break;
  655. case 7368:
  656. $fileType = 'mp3';
  657. break;
  658. case 3780:
  659. $fileType = 'pdf';
  660. break;
  661. case 4545:
  662. $fileType = 'pem';
  663. break;
  664. case 7597:
  665. $fileType = 'fbx';
  666. break;
  667. default:
  668. $fileType = 'unknown'.$typeCode;
  669. break;
  670. }
  671. if ($strInfo['chars1'] == '-1' && $strInfo['chars2'] == '-40') {
  672. return 'jpg';
  673. }
  674. if ($strInfo['chars1'] == '-119' && $strInfo['chars2'] == '80') {
  675. return 'png';
  676. }
  677. if ($strInfo['chars1'] == '-48' && $strInfo['chars2'] == '-49') {
  678. return 'msi';
  679. }
  680. return $fileType;
  681. }
  682. }