PHP function comprobarLong

<?php
function comprobarLong($text, $LONGMAXIMA)
{
    if(strlen($text) > $LONGMAXIMA)
    {
        $body = substr($text, 0, $LONGMAXIMA-2); 
        $body .="..";
        return $body;
    }
    else
    {
        return $text;
    }
}
?>