Truncating the text

In many places the description or text needs to be truncated. Following function can be used to truncate the text in such a way that the words are not half chopped up.

Argument List:

1. $mystring: The text
2. $limit: length of the string upto which string is to be truncate.
   
3. $pad: The string which shows continuation. Default it takes 3 dots (...) .

function truncate_text($mystring, $limit = 153,$pad ="..."){
if(strlen($mystring) < $limit)
return $mystring;
$rstring = substr($mystring,0,$limit);
$no_of_chars = strrpos($rstring," ");
if($no_of_chars < $limit)
$rstring = substr($mystring,0,$no_of_chars).$pad;
return $rstring;
}