php 下载ppt,pdf,doc,docx-USB迷|专注于互联网分享

php 下载ppt,pdf,doc,docx

public function download_graduation(){
       $graduation_thesis_id = I('graduation_thesis_id');
       $download_type = I('download_type'); //1表示论文，2表示论文回复
       $graduation_thesis = Db::name('graduation_thesis')->where('graduation_thesis_id',$graduation_thesis_id)->find();
       if($download_type == 1) {
           $filepath = $graduation_thesis['paper_file'];
       }else{
           $filepath = $graduation_thesis['guide_file'];
       }

if(empty($filepath)){
$this->error('文件不存在');
}
       $dir = ".".substr($filepath,0,strrpos($filepath,'/')+1);//文件句柄
       $filename = substr($filepath,strrpos($filepath,'/')+1);//文件名称
       $type= substr($filepath, strrpos($filepath,'.')+1);//文件后缀

//$filename1:下载文件的名称

if($download_type == 1){
$filename1 = $graduation_thesis['filename'];
}else{
$filename1 = $filename;
}

       switch ($type) {
          case 'docx':
              if(file_exists($dir.$filename)){
                  $file = fopen($dir.$filename,"r"); // 打开文件
                  header('Content-Type: application/force-download');
                  header('Content-Type: application/vnd.openxmlformats');
                  header('Accept-Ranges:bytes');
                  header("Accept-Length: ".filesize($dir.$filename));
                  header("Content-Disposition: attachment; filename=".$filename1);
                  echo fread($file,filesize($dir.$filename));
                  $buffer = 1024;
                  while (!feof($file)) {
                      $file_data = fread($file,$buffer);
                      echo $file_data;
                  }
                  fclose($file);
              }else{
                  echo "<script>alert('文件不存在')</script>";
                  echo "<script>window.location='doc.html'</script>";
              }
              break;
          case 'doc':
              if(file_exists($dir.$filename)){
                  $file = fopen($dir.$filename,"r"); // 打开文件
                  header('Content-Type: application/force-download');
                  header('Content-Type: application/msword');
                  header('Accept-Ranges:bytes');
                  header("Accept-Length: ".filesize($dir.$filename));
                  header("Content-Disposition: attachment; filename=".$filename1);
                  echo fread($file,filesize($dir.$filename));
                  $buffer = 1024;
                  while (!feof($file)) {
                      $file_data = fread($file,$buffer);
                      echo $file_data;
                  }
                  fclose($file);
              }else{
                  echo "<script>alert('文件不存在')</script>";
                  echo "<script>window.location='doc.html'</script>";
              }
              break;

          case 'pdf':
              if(file_exists($dir.$filename)){
                  $file = fopen($dir.$filename,"r"); // 打开文件
                  header('Content-Type: application/force-download');
                  header('Content-Type: application/pdf');
                  header('Accept-Ranges:bytes');
                  header("Accept-Length: ".filesize($dir.$filename));
                  header("Content-Disposition: attachment; filename=".$filename1);
                  echo fread($file,filesize($dir.$filename));
                  $buffer = 1024;
                  while (!feof($file)) {
                      $file_data = fread($file,$buffer);
                      echo $file_data;
                  }
                  fclose($file);
              }else{
                  echo "<script>alert('文件不存在')</script>";
                  echo "<script>window.location='doc.html'</script>";
              }
              break;

          case 'ppt':
              if(file_exists($dir.$filename)){
                  $file = fopen($dir.$filename,"r"); // 打开文件
                  header('Content-Type: application/force-download');
                  header('Content-Type: application/vnd.ms-powerpoint');
                  header('Accept-Ranges:bytes');
                  header("Accept-Length: ".filesize($dir.$filename));
                  header("Content-Disposition: attachment; filename=".$filename1);
                  echo fread($file,filesize($dir.$filename));
                  $buffer = 1024;
                  while (!feof($file)) {
                      $file_data = fread($file,$buffer);
                      echo $file_data;
                  }
                  fclose($file);
              }else{
                  echo "<script>alert('文件不存在')</script>";
                  echo "<script>window.location='doc.html'</script>";
              }
              break;

          default:

              break;
       }
       exit();
   }