if I'm understanding you correctly all you should have to do is perform checks on your values.
if you want these tooltips standalone it's as easy as
$tip = null;
if ( isset($_GET['yourvalue1']) ) {
$tip = 'whatyouwanttosay';
} else {
$tip .= '';
} elseif ( isset($_GET['yourvalue2']) ) {
$tip = 'whatidliketosay';
} else {
$tip .= '';
}
etcetc
In that example it would print "whatyouwanttosay" for value1, or "whatidliketosay" for value2.
if you are wanting to addon to your tips per your values just use the .= operator..
$tip = null;
if ( isset($_GET['yourvalue1']) ) {
$tip .= ' whatyou ';
} else {
$tip .= '';
} elseif ( isset($_GET['yourvalue2']) ) {
$tip .= ' wanttosay ';
} else {
$tip .= '';
}
in that case if both were set the tooltip will show up as ' whatyou wanttosay '.
From there after you've set your css class for your link, just create your link as:
<a class='whatever' href="yoururl" tooltip="{$tip}">linktext</a>
That's my take on it anyway. Cheers