//This generates random text from a Markov process. A state is considered to be a single word, 
//separated by one or more spaces
//A word can include a puntuation mark.
//The list of words is considered as a cycle so that the last word transtitions to the first
function RandomizeTextOrder1($strText,$maxLength=0) {
  $arrWords=preg_split("/[\s\t\r\n]+/", $strText);
  
  if(count($arrWords)<3): //Just return original text if it is really short
    return "";
  endif;

  $arrTransitions=array(); //This holds the transitions that are found
  
  //Find the transtitions
  $w1=$arrWords[0];
  $wordNum=1;
  while(array_key_exists($wordNum,$arrWords)) :
    $state=$w1;
    if(!array_key_exists($state,$arrTransitions)) :
      $arrTransitions[$state]=array();
    endif;
    $newState=$arrWords[$wordNum];
    $arrTransitions[$state][]=$newState;
    $w1=$arrWords[$wordNum];
    $wordNum=$wordNum+1;
  endwhile;

  //Add on the transtition from the last word to the first word
  $state=$w1;
  $arrTransitions[$state]=array($arrWords[0]);
 
  if($maxLength==0) :
    $maxLength=count($arrWords); //Use the number of words in original text as default number in random text
  endif;

  srand(time());
  $CurrentState=$arrWords[0]; //Start the same way the original text starts.
  $CurrentLength=0;
  $RandomText="";
  while($CurrentLength<$maxLength) :
    $RandomText.=" ".$CurrentState;
    $NextStateIndex=rand(0,count($arrTransitions[$CurrentState])-1);
    $CurrentState=$arrTransitions[$CurrentState][$NextStateIndex]; //Change states
    $CurrentLength=$CurrentLength+1;
  endwhile;

  return $RandomText;
}