public function getInnerText($e, $normalizeSpaces = true, $flattenLines = false)
{
if (null === $e || !isset($e->textContent) || $e->textContent === '') {
return '';
}
$textContent = trim($e->textContent);
if ($flattenLines) {
$textContent = mb_ereg_replace('(?:[\\r\\n](?:\\s| )*)+', '', $textContent);
} elseif ($normalizeSpaces) {
$textContent = mb_ereg_replace('\\s\\s+', ' ', $textContent);
}
return $textContent;
}