php文件壓縮之PHPZip類用法實例

 　　本文實例講述了php文件壓縮之PHPZip類用法。分享給大家供大家參考。具體如下：

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 <?php // // PHPZip v1.2 by Sext ([email protected]) // // Makes zip archive // // Based on "Zip file creation class", uses zLib // // class PHPZip { function Zip($dir, $zipfilename) { if (@function_exists('gzcompress')) { $curdir = getcwd(); if (is_array($dir)) { $filelist = $dir; } else { $filelist = $this -> GetFileList($dir); } if ((!empty($dir))&&(!is_array($dir))&&(file_exists($dir))) chdir($dir); else chdir($curdir); if (count($filelist)>0) { foreach($filelist as $filename) { if (is_file($filename)) { $fd = fopen ($filename, "r"); $content = fread ($fd, filesize ($filename)); fclose ($fd); if (is_array($dir)) $filename = basename($filename); $this -> addFile($content, $filename); } } $out = $this -> file(); chdir($curdir); $fp = fopen($zipfilename, "w"); fwrite($fp, $out, strlen($out)); fclose($fp); } return 1; } else return 0; } function GetFileList($dir) { if (file_exists($dir)) { $args = func_get_args(); $pref = $args[1]; $dh = opendir($dir); while($files = readdir($dh)) { if (($files!=".")&&($files!="..")) { if (is_dir($dir.$files)) { $curdir = getcwd(); chdir($dir.$files); $file = array_merge($file, $this -> GetFileList("", "$pref$files/")); chdir($curdir); } else $file[]=$pref.$files; } } closedir($dh); } return $file; } var $datasec = array(); var $ctrl_dir = array(); var $eof_ctrl_dir = "x50x4bx05x06x00x00x00x00"; var $old_offset = 0; /** * Converts an Unix timestamp to a four byte DOS date and time format (date * in high two bytes, time in low two bytes allowing magnitude comparison). * * @param integer the current Unix timestamp * * @return integer the current date in a four byte DOS format * * @access private */ function unix2DosTime($unixtime = 0) { $timearray = ($unixtime == 0) ? getdate() : getdate($unixtime); if ($timearray['year'] < 1980) { $timearray['year'] = 1980; $timearray['mon'] = 1; $timearray['mday'] = 1; $timearray['hours'] = 0; $timearray['minutes'] = 0; $timearray['seconds'] = 0; } // end if return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) | ($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1); } // end of the 'unix2DosTime()' method /** * Adds "file" to archive * * @param string file contents * @param string name of the file in the archive (may contains the path) * @param integer the current timestamp * * @access public */ function addFile($data, $name, $time = 0) { $name = str_replace('', '/', $name);   $dtime = dechex($this->unix2DosTime($time)); $hexdtime = 'x' . $dtime[6] . $dtime[7] . 'x' . $dtime[4] . $dtime[5] . 'x' . $dtime[2] . $dtime[3] . 'x' . $dtime[0] . $dtime[1]; eval('$hexdtime = "' . $hexdtime . '";'); $fr = "x50x4bx03x04"; $fr .= "x14x00"; // ver needed to extract $fr .= "x00x00"; // gen purpose bit