Make PHP pathinfo() return the correct filename if the filename is UTF-8

Question

When using PHP\'s pathinfo() function on a filename known to be UTF-8, it does not return the correct value, unless there are \'normal\' characters in front of

Answer 1

When process ansi characters, the function pathinfo do correctly.

Base this note, we will convert (encoding) input to ansi charaters and then still use function pathinfo to keep its whole things.

Finally, we will convert (decoding) output values to original format.

And demo as bellowing.

function _pathinfo($path, $options = null)
{
    $path = urlencode($path);
    $parts = null === $options ? pathinfo($path) : pathinfo($path, $options);
    foreach ($parts as $field => $value) {
        $parts[$field] = urldecode($value);
    }
    return $parts;
}
// calling
_pathinfo('すtest.jpg');
_pathinfo('すtest.jpg', PATHINFO_EXTENSION);

Answer 2

A temporary work-around for this problem appears to be to make sure there is a 'normal' character in front of the accented characters, like so:

function getFilename($path)
{
    // if there's no '/', we're probably dealing with just a filename
    // so just put an 'a' in front of it
    if (strpos($path, '/') === false)
    {
        $path_parts = pathinfo('a'.$path);
    }
    else
    {
        $path= str_replace('/', '/a', $path);
        $path_parts = pathinfo($path);
    }
    return substr($path_parts["filename"],1);
}

Note that we replace all occurrences of '/' with '/a' but this is okay, since we return starting at offset 1 of the result. Interestingly enough, the dirname part of pathinfo() does seem to work, so no workaround is needed there.

Answer 3

I have used these functions in PHP 5.3.3 - 5.3.18 to handle UTF-8 issue in basename() and pathinfo().

if (!function_exists("mb_basename"))
{
  function mb_basename($path)
  {
    $separator = " qq ";
    $path = preg_replace("/[^ ]/u", $separator."\$0".$separator, $path);
    $base = basename($path);
    $base = str_replace($separator, "", $base);
    return $base;
  }
}

if (!function_exists("mb_pathinfo"))
{
  function mb_pathinfo($path, $opt = "")
  {
    $separator = " qq ";
    $path = preg_replace("/[^ ]/u", $separator."\$0".$separator, $path);
    if ($opt == "") $pathinfo = pathinfo($path);
    else $pathinfo = pathinfo($path, $opt);

    if (is_array($pathinfo))
    {
      $pathinfo2 = $pathinfo;
      foreach($pathinfo2 as $key => $val)
      {
        $pathinfo[$key] = str_replace($separator, "", $val);
      }
    }
    else if (is_string($pathinfo)) $pathinfo = str_replace($separator, "", $pathinfo);
    return $pathinfo;
  }
}

Answer 4

private function _pathinfo($path, $options = null) {
  $result = pathinfo(' ' . $path, $options);
  return substr($result, 1);
}

Answer 5

before usage pathinfo

setlocale(LC_ALL,'en_US.UTF-8');
pathinfo($OriginalName, PATHINFO_FILENAME);
pathinfo($OriginalName, PATHINFO_BASENAME);

Answer 6

Please refer to "pathinfo() cannot handle argument with special characters like german 'Umlaute'".