eccolaaaaaaaa

function cutText($modString, $maxLength)
{
if (strlen($modString) > $maxLength)
{
$modString = substr($modString,0,$maxLength);
$lastSpace = strrpos ($modString, " ");
$modString = substr($modString,0,$lastSpace);
$modString .= "...";
}
return $modString;
}

grazie a tutti per avermi svegliato :-))