<?php/** * Zip 文件包工具 * * @author wengxianhu * @date 2013-08-05 */class ZipFolder{ protected $zip; protected $root; protected $ignored_names; public function __construct(){ $this->zip = new ZipArchive; } /** * 解压zip文件到指定文件夹 * * @access public * @param string $zipfile 压缩文件路径 * @param string $path 压缩包解压到的目标路径 * @return booleam 解压成功返回 true 否则返回 false */ public function unzip ($zipfile, $path) { if ($this->zip->open($zipfile) === true) { $file_tmp = @fopen($zipfile, "rb"); $bin = fread($file_tmp, 15); //只读15字节 各个不同文件类型，头信息不一样。 fclose($file_tmp); /* 只针对zip的压缩包进行处理 */ if (true === $this->getTypeList($bin)) { $result = $this->zip->extractTo($path); $this->zip->close(); return $result; } else { return false; } } return false; } /** * 创建压缩文件 * * @access public * @param string $zipfile 将要生成的压缩文件路径 * @param strng $folder 将要被压缩的文件夹路径 * @param array $ignored 要忽略的文件列表 * @return booleam 压缩包生成成功返回true 否则返回 false */ public function zip ($zipfile, $folder, $ignored = null) { $this->ignored_names = is_array($ignored) ? $ignored : $ignored ? array($ignored) : array(); if ($this->zip->open($zipfile, ZIPARCHIVE::CREATE) !== true) { throw new Exception("cannot open <$zipfile>/n"); } $folder = substr($folder, -1) == '/' ? substr($folder, 0, strlen($folder)-1) : $folder; if(strstr($folder, '/')) { $this->root = substr($folder, 0, strrpos($folder, '/')+1); $folder = substr($folder, strrpos($folder, '/')+1); } $this->createZip($folder); return $this->zip->close(); } /** * 递归添加文件到压缩包 * * @access private * @param string $folder 添加到压缩包的文件夹路径 * @param string $parent 添加到压缩包的文件夹上级路径 * @return void */ private function createZip ($folder, $parent=null) { $full_path = $this->root . $parent . $folder; $zip_path = $parent . $folder; $this->zip->addEmptyDir($zip_path); $dir = new DirectoryIterator($full_path); foreach($dir as $file) { if(!$file->isDot()) { $filename = $file->getFilename(); if(!in_array($filename, $this->ignored_names)) { if($file->isDir()) { $this->createZip($filename, $zip_path.'/'); }else { $this->zip->addFile($full_path.'/'.$filename, $zip_path.'/'.$filename); } } } } } /** * 读取压缩包文件与目录列表 * * @access public * @param string $zipfile 压缩包文件 * @return array 文件与目录列表 */ public function fileList($zipfile) { $file_dir_list = array(); $file_list = array(); if ($this->zip->open($zipfile) == true) { for ($i = 0; $i < $this->zip->numFiles; $i++) { $numfiles = $this->zip->getNameIndex($i); if (preg_match('///$/i', $numfiles)) { $file_dir_list[] = $numfiles; } else { $file_list[] = $numfiles; } } } return array('files'=>$file_list, 'dirs'=>$file_dir_list); } /** * 得到文件头与文件类型映射表 * * @author wengxianhu * @date 2013-08-10 * @param $bin string 文件的二进制前一段字符 * @return boolean */ private function getTypeList ($bin) { $array = array( array("504B0304", "zip") ); foreach ($array as $v) { $blen = strlen(pack("H*", $v[0])); //得到文件头标记字节数 $tbin = substr($bin, 0, intval($blen)); ///需要比较文件头长度 if(strtolower($v[0]) == strtolower(array_shift(unpack("H*", $tbin)))) { return true; } } return false; }} 
