一个php把一组文件打包成zip的类

这段php类可以挨个添加文件到数组，最后将添加的文件打包成zip

1. /* $Id: zip.lib.php,v 1.1 2004/02/14 15:21:18 anoncvs_tusedb Exp $ */
2. // vim: expandtab sw=4 ts=4 sts=4:
5. /**
6. * Zip file creation class.
7. * Makes zip files.
8. *
9. * Last Modification and Extension By :
10. *
11. * Hasin Hayder
12. * HomePage : www.hasinme.info
13. * Email : [e-mail]
14. * IDE : PHP Designer 2005
15. *
16. *
17. * Originally Based on :
18. *
19. * http://www.zend.com/codex.php?id=535&single=1
20. * By Eric Mueller
21. *
22. * http://www.zend.com/codex.php?id=470&single=1
23. * by Denis125
24. *
25. * a patch from Peter Listiak for last modified
26. * date and time of the compressed file
27. *
28. * Official ZIP file format: http://www.pkware.com/appnote.txt
29. *
30. * @access public
31. */
32. class zipfile
33. {
34. /**
35. * Array to store compressed data
36. *
37. * @public array $datasec
38. */
39. public $datasec = array();
41. /**
42. * Central directory
43. *
44. * @public array $ctrl_dir
45. */
46. public $ctrl_dir = array();
48. /**
49. * End of central directory record
50. *
51. * @public string $eof_ctrl_dir
52. */
53. public $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
55. /**
56. * Last offset position
57. *
58. * @public integer $old_offset
59. */
60. public $old_offset = 0;
63. /**
64. * Converts an Unix timestamp to a four byte DOS date and time format (date
65. * in high two bytes, time in low two bytes allowing magnitude comparison).
66. *
67. * @param integer the current Unix timestamp
68. *
69. * @return integer the current date in a four byte DOS format
70. *
71. * @access private
72. */
73. function unix2DosTime($unixtime = 0) {
74. $timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);
76. if ($timearray['year'] $timearray['year'] = 1980;
77. $timearray['mon'] = 1;
78. $timearray['mday'] = 1;
79. $timearray['hours'] = 0;
80. $timearray['minutes'] = 0;
81. $timearray['seconds'] = 0;
82. } // end if
84. return (($timearray['year'] - 1980) ($timearray['hours'] > 1);
85. } // end of the 'unix2DosTime()' method
88. /**
89. * Adds "file" to archive
90. *
91. * @param string file contents
92. * @param string name of the file in the archive (may contains the path)
93. * @param integer the current timestamp
94. *
95. * @access public
96. */
97. function addFile($data, $name, $time = 0)
98. {
99. $name = str_replace('\\', '/', $name);
101. $dtime = dechex($this->unix2DosTime($time));
102. $hexdtime = '\x' . $dtime[6] . $dtime[7]
103. . '\x' . $dtime[4] . $dtime[5]
104. . '\x' . $dtime[2] . $dtime[3]
105. . '\x' . $dtime[0] . $dtime[1];
106. eval('$hexdtime = "' . $hexdtime . '";');
108. $fr = "\x50\x4b\x03\x04";
109. $fr .= "\x14\x00"; // ver needed to extract
110. $fr .= "\x00\x00"; // gen purpose bit flag
111. $fr .= "\x08\x00"; // compression method
112. $fr .= $hexdtime; // last mod time and date
114. // "local file header" segment
115. $unc_len = strlen($data);
116. $crc = crc32($data);
117. $zdata = gzcompress($data);
118. $zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug
119. $c_len = strlen($zdata);
120. $fr .= pack('V', $crc); // crc32
121. $fr .= pack('V', $c_len); // compressed filesize
122. $fr .= pack('V', $unc_len); // uncompressed filesize
123. $fr .= pack('v', strlen($name)); // length of filename
124. $fr .= pack('v', 0); // extra field length
125. $fr .= $name;
127. // "file data" segment
128. $fr .= $zdata;
130. // "data descriptor" segment (optional but necessary if archive is not
131. // served as file)
132. $fr .= pack('V', $crc); // crc32
133. $fr .= pack('V', $c_len); // compressed filesize
134. $fr .= pack('V', $unc_len); // uncompressed filesize
136. // add this entry to array
137. $this -> datasec[] = $fr;
139. // now add to central directory record
140. $cdrec = "\x50\x4b\x01\x02";
141. $cdrec .= "\x00\x00"; // version made by
142. $cdrec .= "\x14\x00"; // version needed to extract
143. $cdrec .= "\x00\x00"; // gen purpose bit flag
144. $cdrec .= "\x08\x00"; // compression method
145. $cdrec .= $hexdtime; // last mod time & date
146. $cdrec .= pack('V', $crc); // crc32
147. $cdrec .= pack('V', $c_len); // compressed filesize
148. $cdrec .= pack('V', $unc_len); // uncompressed filesize
149. $cdrec .= pack('v', strlen($name) ); // length of filename
150. $cdrec .= pack('v', 0 ); // extra field length
151. $cdrec .= pack('v', 0 ); // file comment length
152. $cdrec .= pack('v', 0 ); // disk number start
153. $cdrec .= pack('v', 0 ); // internal file attributes
154. $cdrec .= pack('V', 32 ); // external file attributes - 'archive' bit set
156. $cdrec .= pack('V', $this -> old_offset ); // relative offset of local header
157. $this -> old_offset += strlen($fr);
159. $cdrec .= $name;
161. // optional extra field, file comment goes here
162. // save to central directory
163. $this -> ctrl_dir[] = $cdrec;
164. } // end of the 'addFile()' method
167. /**
168. * Dumps out file
169. *
170. * @return string the zipped file
171. *
172. * @access public
173. */
174. function file()
175. {
176. $data = implode('', $this -> datasec);
177. $ctrldir = implode('', $this -> ctrl_dir);
179. return
180. $data .
181. $ctrldir .
182. $this -> eof_ctrl_dir .
183. pack('v', sizeof($this -> ctrl_dir)) . // total # of entries "on this disk"
184. pack('v', sizeof($this -> ctrl_dir)) . // total # of entries overall
185. pack('V', strlen($ctrldir)) . // size of central dir
186. pack('V', strlen($data)) . // offset to start of central dir
187. "\x00\x00"; // .zip file comment length
188. } // end of the 'file()' method
191. /**
192. * A Wrapper of original addFile Function
193. *
194. * Created By Hasin Hayder at 29th Jan, 1:29 AM
195. *
196. * @param array An Array of files with relative/absolute path to be added in Zip File
197. *
198. * @access public
199. */
200. function addFiles($files /*Only Pass Array*/)
201. {
202. foreach($files as $file)
203. {
204. if (is_file($file)) //directory check
205. {
206. $data = implode("",file($file));
207. $this->addFile($data,$file);
208. }
209. }
210. }
212. /**
213. * A Wrapper of original file Function
214. *
215. * Created By Hasin Hayder at 29th Jan, 1:29 AM
216. *
217. * @param string Output file name
218. *
219. * @access public
220. */
221. function output($file)
222. {
223. $fp=fopen($file,"w");
224. fwrite($fp,$this->file());
225. fclose($fp);
226. }
230. } // end of the 'zipfile' class

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php, zip