I'm wondering how CodeIgniter close db connections. In the doc, it says "CodeIgniter intelligently takes care of closing your database connections". But how does CodeIgniter do this? Seems I didn't find the db driver's close method get called in CodeIgniter 3.0.3 source code.
Follow the code. If
$this->db->close()
is called for an action, first thing you should look is
DB.php
file with
CI_DB
class within. There you would see that there is no
close()
method and you should then make search in
DB_driver.php
file which holds
CI_DB_driver
class that is extended class by
CI_DB
class. And Eureca! method with code is there. :) Of course, all these files are in system directory.