unique word count from text

gistfile1.aw

<?php
/**
* transfrom text to array with unique words and their appearance count
*
* @param  string text
* @param  array  excludes
* @param  string sort     prefix php sort function, by default alphabetic
* @return array           the words as keys and the appearance count as value
*/      
function word_count($text, $excludes=array(), $sort = 'k')
{
	$cloud = array();
	
	$words = str_word_count($text, 1);

	foreach($words as $word)
	{
		if( ! in_array($word,$excludes))
		{
			$cloud[$word] = substr_count($text, $word);
		}
	}

	$sort .= 'sort';

	$sort($cloud);

	return $cloud;
}