splitting strings into chunks

[ceemac]

I need to split a string up into a number of chunks of a set size or smaller. I realise that there are functions to do this like chunk_split, but i need to make sure that it doesn't split it in the middle of a word. Is there a way to do this?

Mark

[OhLordy]

<?
$string_parts=explode(" ",$string);
$set_size=100;
$final_array=array();
$n=0;
for($i=0;$i<count($string_parts);$i++)
{
  if((strlen($final_array[$n])+strlen($string_parts[$i]))<$set_size)
  {
    $final_array[$n].=" ".$string_parts[$i];
  }
  else
  {
    $n++;
    $final_array[$n]=$string_parts[$i];
  }
}
?>

I haven't tested this but it should work
HTH
Rob