php ZipArchive压缩函数详解实例
author:一佰互联 2019-04-29   click:192

用ZipArchive压缩文件,这个是php的扩展类,自php5.2版本以后就已经支持这个扩展,如果你在使用的时候出现错误,查看下php.ini里面的extension=php_zip.dll前面的分号有没有去掉,然后再重启Apache这样才能使用这个类库。
例1、生成zip 压缩文件
复制代码 代码如下:
<?php
/* 生成zip 压缩文件 */
function create_zip($files = array(),$destination = "",$overwrite = false) {
    //if the zip file already exists and overwrite is false, return false
    if(file_exists($destination) && !$overwrite) { return false; }
    //vars
    $valid_files = array();
    //if files were passed in...
    if(is_array($files)) {
        //cycle through each file
        foreach($files as $file) {
            //make sure the file exists
            if(file_exists($file)) {
                $valid_files[] = $file;
            }
        }
    }
    //if we have good files...
    if(count($valid_files)) {
        //create the archive
        $zip = new ZipArchive();
        if($zip->open($destination,$overwrite ? ZIPARCHIVE::OVERWRITE : ZIPARCHIVE::CREATE) !== true) {
            return false;
        }
        //add the files
        foreach($valid_files as $file) {
            $file_info_arr= pathinfo($file);
            $zip->addFile($file,$file_info_arr["basename"]);//去掉层级目录
        }
        //debug
        //echo "The zip archive contains ",$zip->numFiles," files with a status of ",$zip->status;         //close the zip -- done!
        $zip->close();         //check to make sure the file exists
        return file_exists($destination);
    }
    else
    {
        return false;
    }
} define("ROOTPATH",dirname ( __FILE__ )); //网站路径 $files_to_zip = array(
    ROOTPATH.DIRECTORY_SEPARATOR."PHP+jQuery+Cookbook.pdf",
    ROOTPATH.DIRECTORY_SEPARATOR."TurboListerZeroTemplate.csv"
);
//if true, good; if false, zip creation failed
$filename="my-archive.zip";
$result = create_zip($files_to_zip,$filename);
 
例2 、压缩文件夹下面的所有文
复制代码 代码如下:
<?php
/*
php zip压缩文件夹下面的所有文件
*/
class HZip
{
  /**
   * 添加文件和子目录的文件到zip文件
   * @param string $folder
   * @param ZipArchive $zipFile
   * @param int $exclusiveLength Number of text to be exclusived from the file path.
   */
  private static function folderToZip($folder, &$zipFile, $exclusiveLength) {
    $handle = opendir($folder);
    while (false !== $f = readdir($handle)) {
      if ($f != "." && $f != "..") {
        $filePath = "$folder/$f";
        // Remove prefix from file path before add to zip.
        $localPath = substr($filePath, $exclusiveLength);
        if (is_file($filePath)) {
          $zipFile->addFile($filePath, $localPath);
        } elseif (is_dir($filePath)) {
          // 添加子文件夹
          $zipFile->addEmptyDir($localPath);
          self::folderToZip($filePath, $zipFile, $exclusiveLength);
        }
      }
    }
    closedir($handle);
  }   /**
   * Zip a folder (include itself).
   * Usage:
   *   HZip::zipDir("/path/to/sourceDir", "/path/to/out.zip");
   *
   * @param string $sourcePath Path of directory to be zip.
   * @param string $outZipPath Path of output zip file.
   */
  public static function zipDir($sourcePath, $outZipPath)
  {
    $pathInfo = pathInfo($sourcePath);
    $parentPath = $pathInfo["dirname"];
    $dirName = $pathInfo["basename"];
    $sourcePath=$parentPath."/".$dirName;//防止传递"folder" 文件夹产生bug
    $z = new ZipArchive();
    $z->open($outZipPath, ZIPARCHIVE::CREATE);//建立zip文件
    $z->addEmptyDir($dirName);//建立文件夹
    self::folderToZip($sourcePath, $z, strlen("$parentPath/"));
    $z->close();
  }
} //使用方法
HZip::zipDir("yourlife", "yourlife.zip");
?>
 

1.ZipArchive::addEmptyDir
添加一个新的文件目录
2.ZipArchive::addFile
将文件添加到指定zip压缩包中。
3.ZipArchive::addFromString
添加的文件同时将内容添加进去
4.ZipArchive::close
关闭ziparchive
5.ZipArchive::extractTo
将压缩包解压
6.ZipArchive::open
打开一个zip压缩包
7.ZipArchive::getStatusString
返回压缩时的状态内容,包括错误信息,压缩信息等等
8.ZipArchive::deleteIndex
删除压缩包中的某一个文件,如:deleteIndex(0)删除第一个文件
9.ZipArchive::deleteName
删除压缩包中的某一个文件名称,同时也将文件删除。