Question

我想用下面的代码下载一个ZIP格式的文件夹。

实际上，此功能非常适合仅将文件夹压缩为zip的情况。

但是我想将zip文件也保存到public / folder中的public文件夹中。我使用laravel和ziparchive

请帮助我

 public function downloadzip($id_pra) {
     $dcmt = DB::table('document')->select(DB::raw(" max(id) as id"))->where('id_praapplication',$id_pra)->groupBy('type')->pluck('id');

     $files = Document::whereIn('id', $dcmt)->get(); 

     $url = url('')."/storage/uploads/file/".$id_pra."/"; 

     # create new zip opbject
     $zip = new \ZipArchive();

     # create a temp file & open it
     $tmp_file = tempnam('.','');
     $zip->open($tmp_file, \ZipArchive::CREATE);
     # loop through each file

     foreach($files as $file){
         $url2 = $url.$file->upload;
         $url2 = str_replace(' ', '%20', $url2);

         if (!function_exists('curl_init')){ 
             die('CURL is not installed!');
         }

         $ch = curl_init();
         curl_setopt($ch, CURLOPT_URL, $url2);
         curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
         $output = curl_exec($ch);
         curl_close($ch);
         $download_file = $output;

         $type = substr($url2, -5, 5); 
         #add it to the zip
         $zip->addFromString(basename($url.$file->upload.'.'.$type),$download_file);
     }

     # close zip
     $zip->close();

     # send the file to the browser as a download
     ob_start();
     $strFile = file_get_contents($tmp_file);         
     header('Content-disposition: attachment; filename=DOC-'.$id_pra.'-'.$url.'.zip');
     header('Content-type: application/zip');
     echo $tmp_file;
     while (ob_get_level()) {
         ob_end_clean();
     }

     readfile($tmp_file);
     exit;   
}

Answer 1

除了创建临时文件外，您还可以直接创建ZIP文件，然后再使用Filesystem API下载它。

public function downloadzip($id_pra) {
     $dcmt = DB::table('document')->select(DB::raw(" max(id) as id"))->where('id_praapplication',$id_pra)->groupBy('type')->pluck('id');

     $files = Document::whereIn('id', $dcmt)->get(); 

     $url = url('')."/storage/uploads/file/".$id_pra."/"; 

     // create new zip object
     $zip = new \ZipArchive();

     // store the public path
     $publicDir = public_path();

     // Define the file name. Give it a unique name to avoid overriding.
     $zipFileName = 'Documents.zip';

     // Create the ZIP file directly inside the desired folder. No need for a temporary file.
     if ($zip->open($publicDir . '/folder/' . $zipFileName, \ZipArchive::CREATE) === true) {
         // Loop through each file
         foreach($files as $file){
             $url2 = $url.$file->upload;
             $url2 = str_replace(' ', '%20', $url2);

             if (!function_exists('curl_init')){ 
                 die('CURL is not installed!');
             }

             $ch = curl_init();
             curl_setopt($ch, CURLOPT_URL, $url2);
             curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
             $output = curl_exec($ch);
             curl_close($ch);
             $download_file = $output;

             $type = substr($url2, -5, 5); 
             #add it to the zip
             $zip->addFromString(basename($url.$file->upload.'.'.$type),$download_file);
         }

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

     // Download the file using the Filesystem API
     $filePath = $publicDir . '/folder/' . $zipFileName;

     if (file_exists($filePath)) {
         return Storage::download($filePath);
     }
}

注意：

我会将CURL部分提取到方法fetchFile($url);中，该方法返回下载的文件，但这不在此问题的范围内。

如何将下载zip保存到laravel中的公用文件夹？

1 个答案: