php ZipArchive压缩函数详解实例

2024-09-04 11:49:51

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在php中生成zip文件我们只要使用一个php zip压缩ZipArchive函数就可以了，下面小编来给大家总结两个实现一个是利用ZipArchive生成zip，另一个压缩文件夹下所有文件.

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,代码如下:

/* 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件,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');

?>