code igniter SQL_CALC_FOUND_ROWS - php

Question

How to get total number of rows for particular query and also limiting the query results to 10 rows. For example. I've a table called sample. It has 400 rows. On running a query like where name = "%Sam%" it returns me 213 rows. Now I'l be taking only first 10 rows and displaying the result to user but I need the total rows returned. How should I need to do it in code igniter?
SELECT
SQL_CALC_FOUND_ROWS *
FROM
sample
WHERE
name like "%sam%"
like this?
How to retrieve total number counts?

Answer 1

You need to run a second query to get the results of SQL_CALC_FOUND_ROWS:
SELECT FOUND_ROWS()
That will return the value found using SQL_CALC_FOUND_ROWS. You may find using an alias easier for getting the result, though:
SELECT FOUND_ROWS() AS num_results

Answer 2

You can use two query one to get the count and the other return the limited result.
Like in your model create a function that only returns the count variable
and create a second function that generates the paginated results.
eg..
public function count($where){
$query = $this->db->query("select count(id) as count from clients $where");
return $query->row('count');
}
}
public function limit($sidx,$sord,$start,$limit,$where){
$query = $this->db->query("select * from clients $where ORDER BY $sidx $sord LIMIT $start , $limit");
if ($query->num_rows() > 0){
return $query->result_array();
}
}
And here goes the controller code
$where = // calculated
$count = count($this->model->count($where));
if( $count > 0 ) { $total_pages = ceil($count/$limit); } else { $total_pages = 0; }
if ($page > $total_pages) $page = $total_pages;
$start = $limit * $page - $limit;
$users = $this->model->limit($sidx,$sord,$start,$limit,$where);
.................