Get last month index from sql output in codeigniter?

Get last month index from sql output in codeigniter?

References

Reference NO 1

http://stackoverflow.com/questions/15197152/get-last-month-index-from-sql-output-in-codeigniter

Reference NO 2

http://stackoverflow.com/questions/15766768/codeigniter-use-the-id-from-a-query-result-in-a-model-to-query-in-a-different

Reference NO 3

http://ellislab.com/codeigniter/user-guide/database/examples.html

Reference NO 4

http://net.tutsplus.com/tutorials/php/codeigniter-from-scratch-the-calendar-library/

Reference NO 5

http://tutorialzine.com/2012/01/question-of-the-day-codeigniter-php-mysql/

Reference NO 6

http://www.daniweb.com/web-development/php/threads/395799/dynamic-dropdown-list-with-database-in-codeigniter

Reference NO 7

https://github.com/benedmunds/CodeIgniter-Ion-Auth

Reference NO 8

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