2.压缩包驱动 · 初心（学习笔记）

>[info] 压缩包驱动 ~~~ <?php namespace base; /** * 压缩包驱动 * @author Devil * @blog http://gong.gg/ * @version 0.0.1 * @datetime 2018-12-01T21:51:08+0800 */ class ZipFolder { protected $zip; protected $root; protected $ignored_names; /** * 构造函数 * @author Devil * @blog http://gong.gg/ * @version 1.0.0 * @datetime 2018-11-28T00:43:18+0800 */ public function __construct() { if(class_exists('ZipArchive')) { $this->zip = new \ZipArchive(); } else { throw new \Exception('当前PHP环境无Zip扩展'); } } /** * 解压zip文件到指定文件夹 * @author Devil * @blog http://gong.gg/ * @version 1.0.0 * @date 2018-06-29 * @desc description * @param [string] $zipfile [压缩文件路径] * @param [string] $path [压缩包解压到的目标路径] * @return [boolean] [true | false] */ public function Unzip($zipfile, $path) { if($this->zip->open($zipfile) === true) { $file_tmp = @fopen($zipfile, "rb"); // 只读15字节各个不同文件类型，头信息不一样。 $bin = fread($file_tmp, 15); 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; } } return false; } /** * 创建压缩文件 * @author Devil * @blog http://gong.gg/ * @version 1.0.0 * @date 2018-06-29 * @desc description * @param [string] $zipfile [将要生成的压缩文件路径] * @param [string] $folder [将要被压缩的文件夹路径] * @param [string] $ignored [要忽略的文件列表] * @return [boolean] [true | false] */ public function Zip($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 * @author Devil * @blog http://gong.gg/ * @version 1.0.0 * @date 2018-06-29 * @desc description * @param [string] $folder [添加到压缩包的文件夹路径] * @param [string] $parent [添加到压缩包的文件夹上级路径] */ private function CreateZip($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 * @author Devil * @blog http://gong.gg/ * @version 1.0.0 * @date 2018-06-29 * @desc description * @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 Devil * @blog http://gong.gg/ * @version 1.0.0 * @date 2018-06-29 * @desc description * @param [string] $bin [文件的二进制前一段字符] * @return [boolean] [true | false] */ private function GetTypeList($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; } } ?> ~~~ * **例子：** ~~~ // 生成压缩包 $app_data_zip = 'E:/xx.zip'; $app_data_dir = 'E:/xx'; $zip = new \base\ZipFolder(); if(!$zip->zip($app_data_zip, $app_data_dir)) { return '生成失败'; } ~~~