如何修改zip文件注释并添加文件？

Question

这是我到目前为止创建zip文件的原因：

        $data = $cache;



$file_name = trim(str_replace( '/' , '_', $dl_url), '_')."-$mysitename.zip";

    header("Content-Type: application/zip");
    header("Content-Disposition: attachment; filename=$file_name");
    header("Content-Length: " . strlen($data));
    echo $data;
    exit;
}

我需要：1。提取旧的zip 2.添加我的文件到旧的zip文件3.zip文件（旧的zip文件和我的文件在一起）并设置我的评论。

Answer 1

您需要实际使用ZipArchive类，而不使用标题：

<?php
$defTitle  = 'untitled_'.date('YmdHis').'.zip';
$file_name = (!empty($_GET['s']))? trim(str_replace( '/' , '_', $_GET['s']), '_').".zip" : $defTitle;
# Create a new Archive
$zip = new ZipArchive;
# Create the file to archive to
$res = $zip->open($file_name, ZipArchive::CREATE);
# If create works
if ($res === TRUE) {
    # Add the data (you can add an actual file here if you want to, this example 
    # is showing how to create a file with string data)
    $zip->addFromString('data.txt', $cache);
    # Create the comment here
    $zip->setArchiveComment('The comment is written here.');
    $zip->close();
}

以上示例改编自PHP手册关于保存存档注释：

http://php.net/manual/en/ziparchive.setarchivecomment.php

修改

以下是压缩到zip然后在下载后删除的示例。它具有ZipArchive类的类扩展：

class Zipster extends ZipArchive
{
    private $path;
    /**
    *   @description    I like to overwrite this with my own method so I can 
    *                   make a directory if not already created
    */
    public function open($path,$flags = NULL)
    {
        $this->path =   $path;
        $dir        =   pathinfo($this->path,PATHINFO_DIRNAME);

        if(!is_dir($dir))
            mkdir($dir,0755,true);
        # Send back the original method
        return  parent::open($this->path,ZipArchive::CREATE);
    }

    public  function download($clear=false)
    {
        # Get the contents of the compiled zip file
        $data   =   file_get_contents($this->path);
        # Do your download headers
        header("Content-Type: application/zip");
        header("Content-Disposition: attachment; filename=".pathinfo($this->path,PATHINFO_BASENAME));
        header("Content-Length: ".strlen($data));
        echo $data;
        # Delete the file if instructed to delete the file
        if($clear)
            unlink($this->path);
        exit;
    }
}

$defTitle   =   'untitled_'.date('YmdHis');
$file_name  =   (!empty($_GET['s']))? trim(str_replace( '/' , '_', $_GET['s']), '_') : $defTitle;
# Create a new (modified) zip archive instance
$zip = new Zipster();
# Create the file to archive to
$res = $zip->open(__DIR__.DS.'tempfolder'.DS.$file_name.".zip");
# If create works
if ($res === TRUE) {
    # Add the data (you can add an actual file here if you want to, this example 
    # is showing how to create a file with string data)
    $zip->addFromString($file_name.".txt", $cache);
    # Create the comment here
    $zip->setArchiveComment('The comment is written here.');
    $zip->close();
    # Remove true to leave the zip file where it is,
    # true will delete the file after download
    $zip->download(true);
}