php - 将上传文件中的空格替换为下划线

Question

我有一个基本脚本，允许我的网站成员上传他们的作品的简短样本，供客户收听。

一些文件名有空格，这在尝试播放示例时显然会导致问题。有没有办法在上传到临时目录和将文件移动到“示例”目录之间用下划线替换这些空格？

<?
            $url = "http://domain.com/uploads/samples/";
            //define the upload path
            $uploadpath = "/home/public_html/uploads/samples";
            //check if a file is uploaded
             if($_FILES['userfile']['name']) {
              $filename = trim(addslashes($_FILES['userfile']['name']));
            //move the file to final destination
              if(move_uploaded_file($_FILES['userfile']['tmp_name'],
            $uploadpath."/". $filename)) {

              echo "

    bla bla bla, the final html output

            ";

              } else{
                if ($_FILES['userfile']['error'] > 0)
              {
                   switch ($_FILES['userfile']['error'])
                {
                  case 1:  echo 'File exceeded upload_max_filesize';  break;
                  case 2:  echo 'File exceeded max_file_size';  break;
                  case 3:  echo 'File only partially uploaded';  break;
                  case 4:  echo 'No file uploaded';  break;
                }
                exit;
              }
              }
            }
?>

Answer 1

在这一行之后:

$filename = trim(addslashes($_FILES['userfile']['name']));

写:

$filename = str_replace(' ', '_', $filename);

像 hello world.mp3(两个空格)这样的文件名会显示为 hello__world.mp3(两个下划线)，为避免这种情况，您可以改为这样做:

$filename = preg_replace('/\s+/', '_', $filename);