code: public static double colemanLiauIndex(String strText) {
          strText = cleanText(strText);
          int intWordCount = wordCount(strText);
          return PHPMethods.round( ( (5.89 * (letterCount(strText) / (double)intWordCount)) - (0.3 * (sentenceCount(strText) / (double)intWordCount)) - 15.8 ), 1);
      }
docs: Returns the Coleman-Liau Index of text entered rounded to one digit.
  
  @param   strText         Text to be checked
  @return