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# Introduction

Introduction -- computation of readability scores for text documents.

## Text_Statistics Description

Text_Statistics allows for computation of readability indexes for text documents.

Text_Statistics calculates some basic readability metrics on a block of text. The number of words, the number of sentences, and the number of total syllables is counted. These statistics can be used to calculate the Flesch score for a sentence, which is a number (usually between 0 and 100) that represents the readability of the text. A basic breakdown of scores is:

90 to 100 | 5th grade
80 to 90 | 6th grade
70 to 80 | 7th grade
60 to 70 | 8th and 9th grade
50 to 60 | 10th to 12th grade (high school)
30 to 50 | college
0 to 30 | college graduate

More info can be read up on WikiPedia article

Example 57-1. Example Text_Statistics
    <?php
      require 'Text/Statistics.php';
      $block = new Text_Statistics($sometext);
      $block->flesch; // returns flesch score for $sometext
    ?>

see the unit tests for additional examples.

Text_Word calculates the number of syllables in a word, based off of the number of contiguous vowel groupings in the word and applying matches to detect special cases.

Example 57-2. Example numSyllables()
    <?php
     require_once 'Text/Word.php'
     $word = new Text_Word('word');
     $word->numSyllables();  // returns 1
    ?>

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