使用PHP重命名带空格的文件

Question

I've got files with spaces in their names that are already on my server. I want to rename them with underscores. I've tried putting a slash before the space, and I've tried replacing the space with %20. Still PHP gives me:

No such file or directory.

Here's my code:

$dir = './';
$dhandle = opendir($dir);
$old_files = array();

if ($dhandle) {
    while (false !== ($fname = readdir($dhandle)))
    {
        if ( ($fname != '.') && ($fname != '..') )
        {
            $old_files[] = (is_dir( "./$fname" )) ? "(Dir) {$fname}" : $fname;
        }
    }
    closedir($dhandle);
}

$new_files = str_replace(' ', '_', $old_files);
$x = 0;
foreach($old_files as $file)
{
    rename(rawurlencode($file), $new_files[$x++]);
}

Answer 1

Are you sure the no such file error does not happen if you don't attempt the rename? A good first step when debugging is to simplify the problem until it's no longer buggy.

I can't tell if you did this because it wasn't working at first or not, but you definitely should not be using rawurlencode() on a local filename, that's guaranteed to screw things up. Additionally, I'm curious what you're doing with "(Dir) {$fname}" - that seems to also be a bug. I suspect more likely what you want to do is:

if ( ($fname != '.') && ($fname != '..') && !is_dir("./$fname" )) 
{
  $old_files[] = $fname;
}

You should also realize, however, that what dir returns is the filename relative to the directory passed so you need to make sure your is_dir() and rename operations take that into account. So more than likely you want to say:

is_dir($dir.'/'.$fname);

and

rename($dir.'/'.$file,$dir.'/'.$new_files[$x++]);