<?
function read_shuffle($string) {
	$words =preg_split('/[^\w\']/', $string, -1, PREG_SPLIT_NO_EMPTY ); 
	$out = "";
	foreach($words as $word) {
		if (strlen($word) > 3) {
			$first = substr($word, 0,1);
			$last = substr($word, -1,1);
			$mid = substr($word, 1,-1);
			$rest = $mid;
			while ($rest == $mid) $rest = str_shuffle($mid);
			$out = $first.$rest.$last;
			$string = preg_replace("/$word/", $out, $string, 1);
		}
	}
	return $string;
}

// As of PHP 4.3.0 this function is in the PHP distribution.
// so it's not needed.

function str_shuffle($word) {
	for($i=0;$i<strlen($word);$i++) $array[$i] = $word[$i];
	shuffle($array);
	return implode("", $array);
}

?>