/**
 * Calculate directory size.
 * @param   string  $path   without trailing '/' or '\' (eg. '/users/sampleUser', not '/users/sampleUser/')
 * @return  int 	size in bytes
 */
function calc_dir_size($path)
{
    $size = 0;

    if ($handle = opendir($path))
    {
        while (false !== ($entry = readdir($handle)))
        {
            $current_path = $path . '/' . $entry;
            if ($entry != '.' && $entry != '..' && !is_link($current_path))
            {
                if (is_file($current_path))
                    $size += filesize($current_path);
                elseif (is_dir($current_path))
                    $size = calc_dir_size($current_path);
            }
        }
    }
    closedir($handle);
    return $size;
}

/**
 * Calculate directory size.
 * @param   string	$path
 * @return  int 	size in bytes
 */
function calc_dir_size($path)
{
    $size = 0;

    if ($handle = opendir($path))
    {
        while (false !== ($entry = readdir($handle)))
        {
            $current_path = $path . '/' . $entry;
            if ($entry != '.' && $entry != '..' && !is_link($current_path))
            {
                if (is_file($current_path))
                    $size += filesize($current_path);
                elseif (is_dir($current_path))
                    $size = calc_dir_size($current_path);
            }
        }
    }
    closedir($handle);
    return $size;
}

/**
 * Calculate directory size.
 * @param   string	$path
 * @return  int 	size in bytes
 */
function calc_dir_size($path)
{
	$size = 0;

	if ($handle = opendir($path))
	{
		while (false !== ($entry = readdir($handle)))
		{
			$current_path = $path . '/' . $entry;
			if ($entry != '.' && $entry != '..' && !is_link($current_path))
			{
				if (is_file($current_path))
					$size += filesize($current_path);
				elseif (is_dir($current_path))
					$size = calc_dir_size($current_path);
			}
		}
	}
	closedir($handle);
	return $size;
}

Calculate directory size

directory

PHP