[php] PHP filesize MB/KB conversion

This is based on @adnan's great answer.

Changes:

  • added internal filesize() call
  • return early style
  • saving one concatentation on 1 byte

And you can still pull the filesize() call out of the function, in order to get a pure bytes formatting function. But this works on a file.


/**
 * Formats filesize in human readable way.
 *
 * @param file $file
 * @return string Formatted Filesize, e.g. "113.24 MB".
 */
function filesize_formatted($file)
{
    $bytes = filesize($file);

    if ($bytes >= 1073741824) {
        return number_format($bytes / 1073741824, 2) . ' GB';
    } elseif ($bytes >= 1048576) {
        return number_format($bytes / 1048576, 2) . ' MB';
    } elseif ($bytes >= 1024) {
        return number_format($bytes / 1024, 2) . ' KB';
    } elseif ($bytes > 1) {
        return $bytes . ' bytes';
    } elseif ($bytes == 1) {
        return '1 byte';
    } else {
        return '0 bytes';
    }
}

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