//grabs the text of the (LIMIT n) posts by the user
$sql = "SELECT phpbb_posts_text.post_text FROM `phpbb_posts`,`phpbb_posts_text`
	WHERE phpbb_posts.poster_id = " . $userdata['user_id'] . "
	AND phpbb_posts.post_id = phpbb_posts_text.post_id
	ORDER BY phpbb_posts.post_time DESC
	LIMIT ". $post_history." ;";

if( !($result = $db->sql_query($sql)) )
{
	message_die(GENERAL_ERROR, 'Could not query information', '', __LINE__, __FILE__, $sql);
}

$inc = 0;

$flesch_total = 0;
$flesch_total_grade = 0;

while ($row = mysql_fetch_array($result, MYSQL_ASSOC))
{
		//replace all bbcode with _nothing_
		$text = preg_replace('/\[.*?\]/','',$row[post_text]);

		$flesch_total = $flesch_total + calculate_flesch($text);	
		$flesch_grade_total = $flesch_grade_total + calculate_flesch_grade($text);	

		$inc++;
		//var_dump($row);
}

$flesch_average = round($flesch_total / mysql_num_rows($result),2);
$flesch_grade_average = round($flesch_grade_total / mysql_num_rows($result),2);

if ($userdata['user_id'] == "7") {
	$flesch_average = '666';
	$flesch_grade_average = '666';
}

$sql = "UPDATE `phpbb_users` SET `user_flesch_average` = '" . $flesch_average . "', `user_flesch_grade_average` = '". $flesch_grade_average ."' WHERE `user_id` =" . $userdata['user_id'] . " LIMIT 1 ;";

if( !($result = $db->sql_query($sql)) )
{
	message_die(GENERAL_ERROR, 'Could not query readability or grade', '', __LINE__, __FILE__, $sql);
}