public static function averageWordsPerSentence($strText, $strEncoding = '')
{
$intSentenceCount = self::sentenceCount($strText, $strEncoding);
$intWordCount = self::wordCount($strText, $strEncoding);
$averageWords = Maths::bcCalc($intWordCount, '/', $intSentenceCount);
return $averageWords;
}