/**
* Gives the Spache readability score of text entered rounded to one digit
* @param boolean|string $strText Text to be checked
* @return int|float
*/
public function spacheReadabilityScore($strText = false)
{
$strText = $this->setText($strText);
$score = Maths::bcCalc(Maths::bcCalc(Maths::bcCalc(0.121, '*', Maths::bcCalc(Text::wordCount($strText, $this->strEncoding), '/', Text::sentenceCount($strText, $this->strEncoding))), '+', Maths::bcCalc(0.082, '*', $this->spacheDifficultWordCount($strText))), '+', 0.659);
if ($this->normalise) {
return Maths::normaliseScore($score, 0, 5, $this->dps);
// Not really suitable for measuring readability above grade 4
} else {
return Maths::bcCalc($score, '+', 0, true, $this->dps);
}
}
/**
* Returns the percentage of words with more than three syllables
* @param string $strText Text to be measured
* @param bool $blnCountProperNouns Boolean - should proper nouns be included in words count
* @return int|float
*/
public static function percentageWordsWithThreeSyllables($strText, $blnCountProperNouns = true, $strEncoding = '')
{
$intWordCount = Text::wordCount($strText, $strEncoding);
$intLongWordCount = self::wordsWithThreeSyllables($strText, $blnCountProperNouns, $strEncoding);
$intPercentage = Maths::bcCalc(Maths::bcCalc($intLongWordCount, '/', $intWordCount), '*', 100);
return $intPercentage;
}
/**
* Returns average words per sentence for text.
* @param string $strText Text to be measured
* @param string $strEncoding Encoding of text
* @return int|float
*/
public static function averageWordsPerSentence($strText, $strEncoding = '')
{
$intSentenceCount = self::sentenceCount($strText, $strEncoding);
$intWordCount = self::wordCount($strText, $strEncoding);
$averageWords = Maths::bcCalc($intWordCount, '/', $intSentenceCount);
return $averageWords;
}
