Add to shortlist PHP MYSQL or JQUERY?

I'm really trying to work out the best approach to creating an add to shortlist option on a clients realestate website.

This link http://www.harcourts.com.au/Property/Residential looks good, and to me it appears to be using a table to 开发者_Go百科storre the data, thats when i thought of maybe using the users ip address to store their data for 30days.

But then the problem would be that if 5 computers are on one ISP then they would have the same shortlists.

I then thought jquery would be good but i have not done anything of that sort before.

If anyone could please provide me a simple php mysql or jquery example of adding unique id's to a shortlist cache or cookie or session that would be great.

PS: I have only beginners knowledge so if examples could be posted or linked I will definitely learn it, not just copy and paste and forget. :-)

Thanks in advance.

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You could create a cookie with a 30 day expiry which has a randomly generated id that you use to link to rows in your database.

Initialisation:

if( !isset( $_COOKIE['listid'] ) )
{
    $listid = md5( time() ); // Should make sure this is unique
    setcookie( 'listid', $listid , time()+60*60*24*30 );
}
else
{
    $listid = $_COOKIE['listid'];   
}

Adding an item:

mysql_query( 'INSERT INTO `table` ( `listid`, `itemid`) VALUES ("' . $listid . '","' . $itemid . '");' );

Retrieving items:

$q = mysql_query( 'SELECT `itemid` from `table` WHERE `listid` = "' . $listid . '"' );

while( $r = mysql_fetch_assoc( $q ) )
{
    $items[] = $r;
}

This is a very basic solution, you would need to build on it to get exactly what you want.