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HomeBackend DevelopmentPHP TutorialHow to decompress a ZIP file to a specified folder using PHP

The example in this article describes how to decompress a ZIP file to a specified folder with PHP. Share it with everyone for your reference, the details are as follows:

/**
 * function: 解压zip 格式的文件
 * author:friker
 * date:2015-15-14
 * reference:http://php.cn/manual/zh/ref.zip.php
 * all rights reserved:php.cn
 */
class Unzip{
  public function __construct(){
    //init code here...
    header("content-type:text/html;charset=utf8");
  }
  /**
  * 解压文件到指定目录
  *
  * @param  string  zip压缩文件的路径
  * @param  string  解压文件的目的路径
  * @param  boolean 是否以压缩文件的名字创建目标文件夹
  * @param  boolean 是否重写已经存在的文件
  *
  * @return boolean 返回成功 或失败
  */
  public function unzip($src_file, $dest_dir=false, $create_zip_name_dir=true, $overwrite=true){
  if ($zip = zip_open($src_file)){
    if ($zip){
      $splitter = ($create_zip_name_dir === true) ? "." : "/";
      if($dest_dir === false){
        $dest_dir = substr($src_file, 0, strrpos($src_file, $splitter))."/";
      }
      // 如果不存在 创建目标解压目录
      $this->create_dirs($dest_dir);
       // 对每个文件进行解压
       while ($zip_entry = zip_read($zip)){
          // 文件不在根目录
          $pos_last_slash = strrpos(zip_entry_name($zip_entry), "/");
          if ($pos_last_slash !== false){
            // 创建目录 在末尾带 /
            $this->create_dirs($dest_dir.substr(zip_entry_name($zip_entry), 0, $pos_last_slash+1));
          }
          // 打开包
          if (zip_entry_open($zip,$zip_entry,"r")){
            // 文件名保存在磁盘上
            $file_name = $dest_dir.zip_entry_name($zip_entry);
            // 检查文件是否需要重写
            if ($overwrite === true || $overwrite === false && !is_file($file_name)){
              // 读取压缩文件的内容
              $fstream = zip_entry_read($zip_entry, zip_entry_filesize($zip_entry));
              @file_put_contents($file_name, $fstream);
              // 设置权限
              chmod($file_name, 0777);
              echo "save: ".$file_name."<br />";
            }
            // 关闭入口
            zip_entry_close($zip_entry);
          }
        }
        // 关闭压缩包
        zip_close($zip);
      }
    }else{
      return false;
    }
    return true;
  }
  /**
  * 创建目录
  */
  public function create_dirs($path){
   if (!is_dir($path)){
     $directory_path = "";
     $directories = explode("/",$path);
     array_pop($directories);
     foreach($directories as $directory){
       $directory_path .= $directory."/";
       if (!is_dir($directory_path)){
         mkdir($directory_path);
         chmod($directory_path, 0777);
       }
     }
   }
  }
}
/*
 using:
 $z = new Unzip();
 $z->unzip("./bootstrap-3.3.4.zip",&#39;./unzipres/&#39;, true, false);
*/


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