protected function getRealpathCacheSize()
{
$size = ini_get('realpath_cache_size');
$size = trim($size);
$unit = strtolower(substr($size, -1, 1));
switch ($unit) {
case 'g':
return $size * 1024 * 1024 * 1024;
case 'm':
return $size * 1024 * 1024;
case 'k':
return $size * 1024;
default:
return (int) $size;
}
}