如何使用PHP和目标目录创建压缩文件？

Question

我从以前的帖子中找到了下面的脚本来使用PHP创建一个ZIP文件。

这个脚本可以让你创建一个zip文件，但它不允许你在你想要的任何目录下创建它。这是原始代码。

<?php 
    // Config Vars 

    $sourcefolder = "uploads/output" ; // Default: "./" 
    $zipfilename = "myarchive.zip"; // Default: "myarchive.zip" 
    $timeout  = 5000   ; // Default: 5000 

    // instantate an iterator (before creating the zip archive, just 
    // in case the zip file is created inside the source folder) 
    // and traverse the directory to get the file list. 
    $dirlist = new RecursiveDirectoryIterator($sourcefolder); 
    $filelist = new RecursiveIteratorIterator($dirlist); 

    // set script timeout value 
    ini_set('max_execution_time', $timeout); 

    // instantate object 
    $zip = new ZipArchive(); 

    // create and open the archive 
    if ($zip->open("$zipfilename", ZipArchive::CREATE) !== TRUE) { 
     die ("Could not open archive"); 
    } 

    // add each file in the file list to the archive 
    foreach ($filelist as $key=>$value) { 
     $zip->addFile(realpath($key), $key) or die ("ERROR: Could not add file: $key"); 
    } 

    // close the archive 
    $zip->close(); 
    echo "<br>Archive ". $zipfilename . " created successfully - "; 

    // And provide download link ?> 
    <a href="http:<?php echo $zipfilename;?>" target="_blank">Download <?php echo $zipfilename?></a> 

我试图修改代码，以便能够决定脚本的desitnation因为我发现没有办法花了几个小时在互联网上之后。一些解决方案建议在哪里更改$ zipfilename =“myarchive.zip”;到$ zipfilename =“uploads/output/myarchive.zip”;但要下载的URL链接我要表现为：成功创建存档myarchive.zip - 下载成功创建myarchive.zip没有存档上传/输出/ myarchive.zip - 下载myarchive.zip

因此我试过这段代码，但它对我没有用。我不知道我做错了什么。

<?php 
// Config Vars 

$sourcefolder = "uploads/output" ; // Default: "./" 
$destfolder = "uploads/output/"; // Default: "myarchive.zip" 
$zipfilename = "myarchive.zip"; // Default: "myarchive.zip" 
$timeout  = 5000   ; // Default: 5000 

// instantate an iterator (before creating the zip archive, just 
// in case the zip file is created inside the source folder) 
// and traverse the directory to get the file list. 
$dirlist = new RecursiveDirectoryIterator($sourcefolder); 
$filelist = new RecursiveIteratorIterator($dirlist); 

// set script timeout value 
ini_set('max_execution_time', $timeout); 

// instantate object 
$zip = new ZipArchive(); 

// create and open the archive 
if ($zip->open(''.$destfolder.''.$zipfilename.'', ZipArchive::CREATE) !== TRUE) { 
    die ("Could not open archive"); 
} 

// add each file in the file list to the archive 
foreach ($filelist as $key=>$value) { 
    $zip->addFile(realpath($key), $key) or die ("ERROR: Could not add file: $key"); 
} 

// close the archive 
$zip->close(); 
echo "<br>Archive ". $zipfilename . " created successfully - "; 

// And provide download link ?> 
<a href="http:<?php echo $zipfilename;?>" target="_blank">Download <?php echo $zipfilename?></a> 

Answer 1

实施例的静态方法来创建zip档案：

//... 
public static function zip($source, $destination) 
{ 
    if (!extension_loaded('zip') || !file_exists($source)) { 
     throw new \Exception('zip not loaded'); 
    } 

    $zip = new \ZipArchive(); 
    if ($zip->open($destination, \ZIPARCHIVE::CREATE) === false) { 
     return false; 
    } 

    if (is_dir($source) === true) { 
     $files = new \RecursiveIteratorIterator(
      new \RecursiveDirectoryIterator($source), 
      \RecursiveIteratorIterator::SELF_FIRST 
     ); 

     foreach ($files as $file) { 
      if (in_array(substr($file, strrpos($file, DIRECTORY_SEPARATOR) + 1), array('.', '..'))) { 
       continue; 
      } 
      $file = realpath($file); 
      if (is_dir($file) === true) { 
       $zip->addEmptyDir(str_replace($source . DIRECTORY_SEPARATOR, '', $file . DIRECTORY_SEPARATOR)); 
      } else { 
       if (is_file($file) === true) { 
        $zip->addFromString(
         str_replace($source . DIRECTORY_SEPARATOR, '', $file), 
         file_get_contents($file) 
        ); 
       } 
      } 
     } 
    } else { 
     if (is_file($source) === true) { 
      $zip->addFromString(basename($source), file_get_contents($source)); 
     } 
    } 

    return $zip->close(); 
} 
// ...