[Solved] Delete row if key code is there for more than 15 min

Temporarily add these lines after $this->db->delete(...) :

PHP Code:

echo $this->db->last_query();
die(); 


This will output the query which was generated by the Query Builder. You can verify if this is what you could expect.

I had to change column on DB from datetime to int(10) and use time() instead of date('Y-m-d H:i')

There's only one rule - please don't tell anyone to go and read the manual.  Sometimes the manual just SUCKS!