Format long texts

/**
 * Cut a text so it won't have more than $max_length chars and any word should not have more than $max_word chars
 *
 * @param unknown_type $length_limit
 * @param unknown_type $length_word
 */
function format_long_text($str, $max_length=99999, $max_word = 60){
 //limit string length
 $has_tail = false;
 if(strlen($str) > $max_length){
  $new_str = substr($str, 0, $max_length);
  //search for non-alpha char
  for($i = $max_length; $i < strlen($str) && ctype_alpha($str[$i]); $i++) $new_str .= $str[$i];
  $str = $new_str;
  $has_tail = true;
 }

 if(3 < $max_word && $max_word < $max_length){
  do{
   $words = explode(' ', $str);
   $do_loop = false;
   foreach ($words as $word){

    if(strlen($word) > $max_word){
     //bug in IE: point followed by char does not split the text
     $fixed_word = str_replace('.', '. ', $word);

     $new_word = '';
     $j = 0;
     for($i = 0; $i < strlen($fixed_word); $i++){
      $j = (' ' == $fixed_word[$i]?0:$j+1);

      if(($j+1)%$max_word==0){
       $new_word .= ' ' . $fixed_word[$i];
      }else{
       $new_word .= $fixed_word[$i];
      }
     }
     $str = str_replace($word, $new_word, $str);
     $do_loop = true;
     break;
    }
   }
  }while($do_loop);
 }

 return $str . ($has_tail?'..':'');
}