CodeIgniter activerecord, retrieve last insert id?

Question

Shame on me...

I looked at the user guide and the first function is $this->db->insert_id();

This also works with activerecord inserts...

EDIT: I updated the link

Last insert id means you can get inserted auto increment id by using this method in active record,

$this->db->insert_id() 
// it can be return insert id it is 
// similar to the mysql_insert_id in core PHP

You can refer this link you can find some more stuff.

Information from executing a query

for Specific table you cannot use $this->db->insert_id() . even the last insert happened long ago it can be fetched like this. may be wrong. but working well for me

     $this->db->select_max('{primary key}');
     $result= $this->db->get('{table}')->row_array();
     echo $result['{primary key}'];

List of details which helps in requesting id and queries are

For fetching Last inserted Id :This will fetching the last records from the table

$this->db->insert_id(); 

Fetching SQL query add this after modal request

$this->db->last_query()

After your insert query, use this command $this->db->insert_id(); to return the last inserted id.

For example:

$this->db->insert('Your_tablename', $your_data);

$last_id =  $this->db->insert_id();

echo $last_id // assume that the last id from the table is 1, after the insert query this value will be 2.