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PHP zip文件解压类代码

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authicon dly 发表于 2011-9-1 14:29:11 | 显示全部楼层 |阅读模式

  1. class zip
  2. {
  3. var $datasec, $ctrl_dir = array();
  4. var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
  5. var $old_offset = 0; var $dirs = Array(".");
  6. function get_List($zip_name)
  7. {
  8. $zip = @fopen($zip_name, 'rb');
  9. if(!$zip) return(0);
  10. $centd = $this->ReadCentralDir($zip,$zip_name);
  11. @rewind($zip);
  12. @fseek($zip, $centd['offset']);
  13. for ($i=0; $i<$centd['entries']; $i++)
  14. {
  15. $header = $this->ReadCentralFileHeaders($zip);
  16. $header['index'] = $i;$info['filename'] = $header['filename'];
  17. $info['stored_filename'] = $header['stored_filename'];
  18. $info['size'] = $header['size'];$info['compressed_size']=$header['compressed_size'];
  19. $info['crc'] = strtoupper(dechex( $header['crc'] ));
  20. $info['mtime'] = $header['mtime']; $info['comment'] = $header['comment'];
  21. $info['folder'] = ($header['external']==0x41FF0010||$header['external']==16)?1:0;
  22. $info['index'] = $header['index'];$info['status'] = $header['status'];
  23. $ret[]=$info; unset($header);
  24. }
  25. return $ret;
  26. }
  27. function Add($files,$compact)
  28. {
  29. if(!is_array($files[0])) $files=Array($files);
  30. for($i=0;$files[$i];$i++){
  31. $fn = $files[$i];
  32. if(!in_Array(dirname($fn[0]),$this->dirs))
  33. $this->add_Dir(dirname($fn[0]));
  34. if(basename($fn[0]))
  35. $ret[basename($fn[0])]=$this->add_File($fn[1],$fn[0],$compact);
  36. }
  37. return $ret;
  38. }
  39. function get_file()
  40. {
  41. $data = implode('', $this -> datasec);
  42. $ctrldir = implode('', $this -> ctrl_dir);
  43. return $data . $ctrldir . $this -> eof_ctrl_dir .
  44. pack('v', sizeof($this -> ctrl_dir)).pack('v', sizeof($this -> ctrl_dir)).
  45. pack('V', strlen($ctrldir)) . pack('V', strlen($data)) . "\x00\x00";
  46. }
  47. function add_dir($name)
  48. {
  49. $name = str_replace("\", "/", $name);
  50. $fr = "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00";
  51. $fr .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) );
  52. $fr .= pack("v", 0 ).$name.pack("V", 0).pack("V", 0).pack("V", 0);
  53. $this -> datasec[] = $fr;
  54. $new_offset = strlen(implode("", $this->datasec));
  55. $cdrec = "\x50\x4b\x01\x02\x00\x00\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00";
  56. $cdrec .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) );
  57. $cdrec .= pack("v", 0 ).pack("v", 0 ).pack("v", 0 ).pack("v", 0 );
  58. $ext = "\xff\xff\xff\xff";
  59. $cdrec .= pack("V", 16 ).pack("V", $this -> old_offset ).$name;
  60. $this -> ctrl_dir[] = $cdrec;
  61. $this -> old_offset = $new_offset;
  62. $this -> dirs[] = $name;
  63. }
  64. function add_File($data, $name, $compact = 1)
  65. {
  66. $name = str_replace('\\', '/', $name);
  67. $dtime = dechex($this->DosTime());
  68. $hexdtime = '\x' . $dtime[6] . $dtime[7].'\x'.$dtime[4] . $dtime[5]
  69. . '\x' . $dtime[2] . $dtime[3].'\x'.$dtime[0].$dtime[1];
  70. eval('$hexdtime = "' . $hexdtime . '";');
  71. if($compact)
  72. $fr = "\x50\x4b\x03\x04\x14\x00\x00\x00\x08\x00".$hexdtime;
  73. else $fr = "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00".$hexdtime;
  74. $unc_len = strlen($data); $crc = crc32($data);
  75. if($compact){
  76. $zdata = gzcompress($data); $c_len = strlen($zdata);
  77. $zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2);
  78. }else{
  79. $zdata = $data;
  80. }
  81. $c_len=strlen($zdata);
  82. $fr .= pack('V', $crc).pack('V', $c_len).pack('V', $unc_len);
  83. $fr .= pack('v', strlen($name)).pack('v', 0).$name.$zdata;
  84. $fr .= pack('V', $crc).pack('V', $c_len).pack('V', $unc_len);
  85. $this -> datasec[] = $fr;
  86. $new_offset = strlen(implode('', $this->datasec));
  87. if($compact)
  88. $cdrec = "\x50\x4b\x01\x02\x00\x00\x14\x00\x00\x00\x08\x00";
  89. else $cdrec = "\x50\x4b\x01\x02\x14\x00\x0a\x00\x00\x00\x00\x00";
  90. $cdrec .= $hexdtime.pack('V', $crc).pack('V', $c_len).pack('V', $unc_len);
  91. $cdrec .= pack('v', strlen($name) ).pack('v', 0 ).pack('v', 0 );
  92. $cdrec .= pack('v', 0 ).pack('v', 0 ).pack('V', 32 );
  93. $cdrec .= pack('V', $this -> old_offset );
  94. $this -> old_offset = $new_offset;
  95. $cdrec .= $name;
  96. $this -> ctrl_dir[] = $cdrec;
  97. return true;
  98. }
  99. function DosTime() {
  100. $timearray = getdate();
  101. if ($timearray['year'] < 1980) {
  102. $timearray['year'] = 1980; $timearray['mon'] = 1;
  103. $timearray['mday'] = 1; $timearray['hours'] = 0;
  104. $timearray['minutes'] = 0; $timearray['seconds'] = 0;
  105. }
  106. return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) | ($timearray['hours'] << 11) |
  107. ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1);
  108. }
  109. function Extract ( $zn, $to, $index = Array(-1) )
  110. {
  111. $ok = 0; $zip = @fopen($zn,'rb');
  112. if(!$zip) return(-1);
  113. $cdir = $this->ReadCentralDir($zip,$zn);
  114. $pos_entry = $cdir['offset'];
  115. if(!is_array($index)){ $index = array($index); }
  116. for($i=0; $index[$i];$i++){
  117. if(intval($index[$i])!=$index[$i]||$index[$i]>$cdir['entries'])
  118. return(-1);
  119. }
  120. for ($i=0; $i<$cdir['entries']; $i++)
  121. {
  122. @fseek($zip, $pos_entry);
  123. $header = $this->ReadCentralFileHeaders($zip);
  124. $header['index'] = $i; $pos_entry = ftell($zip);
  125. @rewind($zip); fseek($zip, $header['offset']);
  126. if(in_array("-1",$index)||in_array($i,$index))
  127. $stat[$header['filename']]=$this->ExtractFile($header, $to, $zip);
  128. }
  129. fclose($zip);
  130. return $stat;
  131. }
  132. function ReadFileHeader($zip)
  133. {
  134. $binary_data = fread($zip, 30);
  135. $data = unpack('vchk/vid/vversion/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len', $binary_data);
  136. $header['filename'] = fread($zip, $data['filename_len']);
  137. if ($data['extra_len'] != 0) {
  138. $header['extra'] = fread($zip, $data['extra_len']);
  139. } else { $header['extra'] = ''; }
  140. $header['compression'] = $data['compression'];$header['size'] = $data['size'];
  141. $header['compressed_size'] = $data['compressed_size'];
  142. $header['crc'] = $data['crc']; $header['flag'] = $data['flag'];
  143. $header['mdate'] = $data['mdate'];$header['mtime'] = $data['mtime'];
  144. if ($header['mdate'] && $header['mtime']){
  145. $hour=($header['mtime']&0xF800)>>11;$minute=($header['mtime']&0x07E0)>>5;
  146. $seconde=($header['mtime']&0x001F)*2;$year=(($header['mdate']&0xFE00)>>9)+1980;
  147. $month=($header['mdate']&0x01E0)>>5;$day=$header['mdate']&0x001F;
  148. $header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);
  149. }else{$header['mtime'] = time();}
  150. $header['stored_filename'] = $header['filename'];
  151. $header['status'] = "ok";
  152. return $header;
  153. }
  154. function ReadCentralFileHeaders($zip){
  155. $binary_data = fread($zip, 46);
  156. $header = unpack('vchkid/vid/vversion/vversion_extracted/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len/vcomment_len/vdisk/vinternal/Vexternal/Voffset', $binary_data);
  157. if ($header['filename_len'] != 0)
  158. $header['filename'] = fread($zip,$header['filename_len']);
  159. else $header['filename'] = '';
  160. if ($header['extra_len'] != 0)
  161. $header['extra'] = fread($zip, $header['extra_len']);
  162. else $header['extra'] = '';
  163. if ($header['comment_len'] != 0)
  164. $header['comment'] = fread($zip, $header['comment_len']);
  165. else $header['comment'] = '';
  166. if ($header['mdate'] && $header['mtime'])
  167. {
  168. $hour = ($header['mtime'] & 0xF800) >> 11;
  169. $minute = ($header['mtime'] & 0x07E0) >> 5;
  170. $seconde = ($header['mtime'] & 0x001F)*2;
  171. $year = (($header['mdate'] & 0xFE00) >> 9) + 1980;
  172. $month = ($header['mdate'] & 0x01E0) >> 5;
  173. $day = $header['mdate'] & 0x001F;
  174. $header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);
  175. } else {
  176. $header['mtime'] = time();
  177. }
  178. $header['stored_filename'] = $header['filename'];
  179. $header['status'] = 'ok';
  180. if (substr($header['filename'], -1) == '/')
  181. $header['external'] = 0x41FF0010;
  182. return $header;
  183. }
  184. function ReadCentralDir($zip,$zip_name)
  185. {
  186. $size = filesize($zip_name);
  187. if ($size < 277) $maximum_size = $size;
  188. else $maximum_size=277;
  189. @fseek($zip, $size-$maximum_size);
  190. $pos = ftell($zip); $bytes = 0x00000000;
  191. while ($pos < $size)
  192. {
  193. $byte = @fread($zip, 1); $bytes=($bytes << 8) | Ord($byte);
  194. if ($bytes == 0x504b0506){ $pos++; break; } $pos++;
  195. }
  196. $data=unpack('vdisk/vdisk_start/vdisk_entries/ventries/Vsize/Voffset/vcomment_size',
  197. fread($zip, 18));
  198. if ($data['comment_size'] != 0)
  199. $centd['comment'] = fread($zip, $data['comment_size']);
  200. else $centd['comment'] = ''; $centd['entries'] = $data['entries'];
  201. $centd['disk_entries'] = $data['disk_entries'];
  202. $centd['offset'] = $data['offset'];$centd['disk_start'] = $data['disk_start'];
  203. $centd['size'] = $data['size']; $centd['disk'] = $data['disk'];
  204. return $centd;
  205. }
  206. function ExtractFile($header,$to,$zip)
  207. {
  208. $header = $this->readfileheader($zip);
  209. if(substr($to,-1)!="/") $to.="/";
  210. if(!@is_dir($to)) @mkdir($to,0777);
  211. $pth = explode("/",dirname($header['filename']));
  212. for($i=0;isset($pth[$i]);$i++){
  213. if(!$pth[$i]) continue;
  214. if(!is_dir($to.$pth[$i])) @mkdir($to.$pth[$i],0777);
  215. }
  216. if (!($header['external']==0x41FF0010)&&!($header['external']==16))
  217. {
  218. if ($header['compression']==0)
  219. {
  220. $fp = @fopen($to.$header['filename'], 'wb');
  221. if(!$fp) return(-1);
  222. $size = $header['compressed_size'];
  223. while ($size != 0)
  224. {
  225. $read_size = ($size < 2048 ? $size : 2048);
  226. $buffer = fread($zip, $read_size);
  227. $binary_data = pack('a'.$read_size, $buffer);
  228. @fwrite($fp, $binary_data, $read_size);
  229. $size -= $read_size;
  230. }
  231. fclose($fp);
  232. touch($to.$header['filename'], $header['mtime']);
  233. }else{
  234. $fp = @fopen($to.$header['filename'].'.gz','wb');
  235. if(!$fp) return(-1);
  236. $binary_data = pack('va1a1Va1a1', 0x8b1f, Chr($header['compression']),
  237. Chr(0x00), time(), Chr(0x00), Chr(3));
  238. fwrite($fp, $binary_data, 10);
  239. $size = $header['compressed_size'];
  240. while ($size != 0)
  241. {
  242. $read_size = ($size < 1024 ? $size : 1024);
  243. $buffer = fread($zip, $read_size);
  244. $binary_data = pack('a'.$read_size, $buffer);
  245. @fwrite($fp, $binary_data, $read_size);
  246. $size -= $read_size;
  247. }
  248. $binary_data = pack('VV', $header['crc'], $header['size']);
  249. fwrite($fp, $binary_data,8); fclose($fp);
  250. $gzp = @gzopen($to.$header['filename'].'.gz','rb') or die("Cette archive est compress閑");
  251. if(!$gzp) return(-2);
  252. $fp = @fopen($to.$header['filename'],'wb');
  253. if(!$fp) return(-1);
  254. $size = $header['size'];
  255. while ($size != 0)
  256. {
  257. $read_size = ($size < 2048 ? $size : 2048);
  258. $buffer = gzread($gzp, $read_size);
  259. $binary_data = pack('a'.$read_size, $buffer);
  260. @fwrite($fp, $binary_data, $read_size);
  261. $size -= $read_size;
  262. }
  263. fclose($fp); gzclose($gzp);
  264. touch($to.$header['filename'], $header['mtime']);
  265. @unlink($to.$header['filename'].'.gz');
  266. }}
  267. return true;
  268. }
  269. }
  270. /***********************************/
  271. class zipPeter{
  272. var $_zip_hander = null;
  273. function __construct(){

  275. }
  276. function get_List($zip_name){
  277. $file_list = array();
  278. $this->_zip_hander = zip_open($zip_name);
  279. if ( $this->_zip_hander ) {
  280. while ( $zip_entry = zip_read($this->_zip_hander) ) {
  281. $file_list[] = array('filename'=>zip_entry_name($zip_entry),
  282. 'size'=>zip_entry_filesize($zip_entry),
  283. 'compressed_size'=>zip_entry_compressedsize($zip_entry)
  284. );
  285. }
  286. zip_close($this->_zip_hander);
  287. }
  288. return $file_list;
  289. }
  290. function Extract($zip_name,$folder_name){
  291. $this->_zip_hander = zip_open($zip_name);
  292. if ( !$this->checkDirAndMk($folder_name) ){
  293. return false;
  294. }
  295. if ( substr($folder_name,-1)!="/" ){
  296. $folder_name .= "/";
  297. }
  298. if ( $this->_zip_hander ) {
  299. while ( $zip_entry = zip_read($this->_zip_hander) ) {
  300. $file_info = array('filename'=>zip_entry_name($zip_entry),
  301. 'size'=>zip_entry_filesize($zip_entry),
  302. 'compressed_size'=>zip_entry_compressedsize($zip_entry)
  303. );
  304. $new_file_name = $folder_name.$file_info['filename'];
  305. $buf = "";
  306. if (zip_entry_open($this->_zip_hander, $zip_entry, "r")) {
  307. $buf = zip_entry_read($zip_entry, zip_entry_filesize($zip_entry));
  308. zip_entry_close($zip_entry);
  309. }
  310. if ( $fp = fopen($new_file_name,"w") ){
  311. fwrite($fp,$buf);
  312. fclose($fp);
  313. }
  314. }
  315. zip_close($this->_zip_hander);
  316. return true;
  317. }
  318. else {
  319. return false;
  320. }
  321. }
  322. /**
  323. * 检查目录是否存在，如果不存在是否建立
  324. *
  325. * @param string $dirname 完整的实际路径
  326. * @param bool $mk 如果不存在是否创建
  327. * @param int $mode 创建权限
  328. * @return bool 是否创建成功
  329. */
  330. function checkDirAndMk($dirname,$mk=false,$mode=0777){
  331. if ( is_dir($dirname)==true ){
  332. return true;
  333. }
  334. else {
  335. if ($mk==false){
  336. return false;
  337. }
  338. else {
  339. $dirpath_a = explode('/',$dirname);
  340. for ($i=0;$i<count($dirpath_a);$i++){
  341. if ( $dirpath_a[$i]=="" ){
  342. continue;
  343. }
  344. if ( $path==""||is_dir($path) ){
  345. if ( $path=="" ){
  346. if ( substr(PHP_OS, 0, 3)=="WIN" ){
  347. $path = $dirpath_a[$i];
  348. }
  349. else {
  350. $path .= "/".$dirpath_a[$i];
  351. }
  352. }
  353. else {
  354. $path .= "/".$dirpath_a[$i];
  355. }
  356. if ( is_dir($path) ){
  357. continue;
  358. }
  359. else {
  360. @mkdir($path,$mode);
  361. }
  362. }
  363. else {
  364. return false;
  365. }
  366. }
  367. return true;
  368. }
  369. }
  370. }
  371. }


  374. $z = new Zip;
  375. $lst=$z->get_list('test2.zip');
  376. foreach ($lst as $val){
  377. print_r($val)."\n";
  378. }
  379. $zip_obj = new zipPeter();
  380. //$zip_obj->Extract()
  381. $z->Extract('test2.zip', "f:/wytddd", -1 );
  382. /***/

  384. require_once("zip.lib.php");
  385. set_time_limit(100);
  386. //要解压的文件路径
  387. $arch = $_GET["arch"];
  388. if(!$arch || !file_exists($arch))
  389. $z = new Zip;
  390. $l=$z->get_list($arch); //得到文件列表
  391. $z->Extract($arch, "jieya", -1 );
  392. }
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