how to use order by random in codeigniter - codeigniter

Question

While Searching I want to show the paid customers firstly, and then rest of customers list
but the problem is I want to show by random
for Example. paid customers should not mix with others.
Can anyone tell what will be query?
please help me!
I am using codeigniter

Answer 1

Example:
function randomval()
{
$this->db->order_by('id', 'RANDOM');
$this->db->limit(1);
$query = $this->db->get('tblname');
return $query->result_array();
}

Answer 2

Mysql query for your need if i understood well
SELECT `featured`,group_concat(`id` order by rand() ) as `id` FROM `dbc_posts` where `status` = 1 GROUP By `featured` ORDER BY `featured` DESC
now with php
$results = $this->db->query("SELECT `featured`,group_concat(`id` order by rand() ) as `id` FROM `dbc_posts` where `status` = 1 GROUP By `featured` ORDER BY `featured` DESC")->result_array();
$paid = $results[0];//featured = 1
// comma seprated ids of the paid people e.g :- 3,7,1,26,92 are available in
$paidusers = $results[0]["id"];
//seprate them by
$paidusers = explode(",",$paidusers);
foreach($paidusers as $paiduser)
{
$row = $this->db->get_where("dbc_posts", array("id"=> $paiduser))->row();
print_r($row );
echo "<br>";
}
// do same for unpaid
$unpaid = $results[1];//featured = 0
$unpaidusers = $results[1]["id"];
//seprate them by
$unpaidusers = explode(",",$unpaidusers);
foreach($unpaidusers as $unpaiduser)
{
$row = $this->db->get_where("dbc_posts", array("id"=> $unpaiduser))->row();
print_r($row );
echo "<br>";
}
Ask me if anything goes wrong

Answer 3

Set featured = 1 for paid and featured = 0 for unpaid customers in database. Then use the query
mysql_query("SELECT * FROM dbc_posts WHERE status = 1 ORDER BY featured DESC, RAND() LIMIT 1");