* -> if you don’t want to exclude 
 snippets 
    *       WordPress example:
    *           post_content); ?>
    *       
    *   BTW, this software is free.
    *       by Creative Nights 
    *
    */
    
    
    function cn_article_readability($text, $remove_PRE = true) {
    
        if ($remove_PRE) {
            $text = preg_replace('/pre>(.*)?<\/pre/si','', $text); 
        }
        
        function countSentences($x){
            $find = array('Mr.', 'Mrs.', 'Ms.', 'i.e.', 'e.g.', 'vs.');
            $x = str_replace($find,'',$x);
        	return preg_match_all('/[^\s](\.|\!|\?)(?!\w)/', $x, $match);
        }


        // Based on http://mikebrum.com/counting-the-syllables-in-a-word-with-php/
        
        function countSyllables($x) {
            $triples = 'dn\’t|dn\'t|eau|iou|ouy|you|bl\s';
            $doubles = 'ai|ae|ay|au|ea|ee|ei|eu|ey|ie|ii|io|oa|oe|oi|oo|ou|oy|ue|uy|ya|ye|yi|yo|yu';
            $singles = 'a|e|i|o|u|y';
             
            // Cleaning up word endings
            $find = array('s ','e ');
            $x = str_replace($find, '', $x);

            return preg_match_all('/(' . $triples . '|' . $doubles . '|' . $singles . ')/i', $x, $match);
        }


        $find = array(' ','.','!','?',"\n");
        
        $characters  = strlen(str_replace($find, '', $text));
        $syllables   = countSyllables($text);
        $words       = str_word_count($text);
        $sentences   = countSentences($text);
        
        $mins = floor($words / 200);
        $secs = floor($words % 200 / (200 / 60));
        
        
        // Formulas
        
        $reading_time = $mins . ' minute' . ($mins == 1 ? '' : 's') . ', ' . $secs . ' second' . ($secs == 1 ? '' : 's');
        
        
        // http://en.wikipedia.org/wiki/Automated_Readability_Index
        
        $readability_index = (4.71 * ($characters/$words)) + (0.5 * ($words/$sentences)) - 21.43;
        $readability_index = number_format($readability_index,2);
        
        
        // http://en.wikipedia.org/wiki/Flesch-Kincaid_Readability_Test
        
        $reading_ease_score = (206.835 - 1.015*($words/$sentences) - 84.6*($syllables/$words));
        $reading_ease_score = number_format($reading_ease_score,2);
        
        
        // Output everything
        
        $output = '';
        
        // $output .= $text;
        
        $output .= '
Estimated reading time
';
        $output .= $reading_time . '
';
        
        $output .= '
Automated readability index
';
        $output .= $readability_index . ' (lower is better)
';
        
        $output .= '
The Flesch-Kincaid reading ease
';
        $output .= $reading_ease_score . ' out of 120 (higher is better)
';
        
        $output .= '';
        $output .= '';
        $output .= '';
        $output .= '';
        $output .= '';
        $output .= '
Characters' . $characters . '
Syllables' . $syllables . '
Words' . $words . '
Sentences' . $sentences . '
';
        
        return $output;
        
    }
    
?>