global $wpdb;
$result = $wpdb->get_results( "SELECT * FROM `wp_bp_activity` WHERE `user_id` = 158 AND `item_id` = 3609 ORDER BY `date_recorded` DESC”);

$Startdate = $result[2]->date_recorded;

$enddate = $result[0]->date_recorded;

$result5 = $wpdb->get_results( "select * FROM `wp_bp_activity` where ( subtime($Startdate,$enddate))”);

echo $Startdate . "
";

echo $enddate;

echo ‘

';
   print_r($result5);
   echo  '

‘;

[/insert_php]