| private valid_dolquote ( $dquote ) : True | ||
| return | True | if valid, false otherwise |
private function valid_dolquote($dquote)
{
// XXX: support multibyte
return preg_match('/^[$][$]/', $dquote) || preg_match('/^[$][_[:alpha:]][_[:alnum:]]*[$]/', $dquote);
}