TOP Common CodeIgniter Interview Questions & Answers for Freshers & Experienced

TOP Common CodeIgniter Interview Questions & Answers for Freshers & Experienced




If you are good Core Php Programmer & you’ve to move on some Php Frameworks then in that Case Codeigniter & Laravel is a great option. if you are not aware from MVC pattern so just start from the Codegniter framework of PHP to understand the Basics. CodeIgniter is very easy for Beginning and It is one of the great Open source fremeworks in php. Here I am going to write Some Common Codeigniter interview questions and answers for freshers.

#1:- what is CodeIgniter?

Codeigniter is an open source PHP framework for creating dynamic web applications. we can easily create an MVC & Object Oriented pattern website in Codeigniter. it’s very easy for learning compared to other PHP frameworks.

#2: What is the Latest Version of Codeigniter?

CodeIgniter Frameworks comes in three flavors officially: CodeIgniter 3 (current), CodeIgniter 4 (future) and CodeIgniter 2 (legacy).

— CodeIgniter 3.1.6 is the current version of the framework.
— CodeIgniter 2.2.6 is the legacy version of the framework.
— CodeIgniter 4 is the upcoming version of the framework.

#3:- In Which language CodeIgniter is written?

PHP

#4: how you will load a model in CodeIgniter?

models will typically be loaded In your controller functions, you have to use like this.

$this->load->model (‘Your_Model_Name’);

#5: How will you access config variable in codeigniter?

you can use like this:-

$this->config->item('your_variableName');

Core PHP interviews questions with their answers

#6: What are different features of codeigniter?

— CodeIgniter is Fast, Open Source. It is faster and easy than any other framework in php.
— Excellent documentation & a large number of Community.
— light weighted.
— Based on Model View Controller (MVC) & OOP pattern.




Free Download Answers in PDF




#7: folder structure of CodeIgniter?

Application

  • cache
  • Config
  • Controllers
  • core
  • errors
  • helpers
  • hooks
  • language
  • libraries
  • logs
  • models
  • thirdparty
  • views

system

  • core
  • database
  • fonts
  • helpers
  • language
  • libraries

user_guide

#8: How will you connect models to a database manually?

$this->load->database();

#9: How will you load a view in CodeIgniter?

$this->load->view('view_name');

#10: How will you call a constructor in CodeIgniter?

you can use like in this way

parent::_construct()

#11: What is helper in CodeIgniter?

Helpers are the group of functions in a particular category used for performing specific functions.

you can load a helper class like in this way:

$this->load->helper('helperName');

#12: How will you get last inserted ID in Codeigniter?

$this->db->insert_id();

#13: How to unset session in codeigniter?

this->session->unset_userdata(‘somename’);

#14: What are different types of hook points in CodeIgniter?

  • pre_system
  • cache_override
  • display_override
  • post_controller
  • post_controller_constructor
  • pre_controller
  • post_sytem

#15: How to initialize a driver in CodeIgniter?

you can use like in this way:-

$this->load->driver('class_name');

#16: How to connect multiple databases simultaneously in CodeIgniter?


$mydb1 = $this->load->database('group_one', TRUE);
$mydb1 = $this->load->database('group_two', TRUE);

 

#17: How will you enable CSRF in CodeIgniter?

Open your file application/config/config.php file and setting it to

$config ['csrf_protection'] = TRUE;

#18: How to enable CodeIgniter hook?

Open the file application/config/config.php/ file and set it TRUE

$config['enable_hooks'] = TRUE;

#19: What is inhibitor in CodeIgniter?

The inhibitor is an error handler class in CodeIgniter that uses native PHP functions like set_exception_handler, set_error_handler, register_shutdown_function to handle parse errors, exceptions, and fatal errors.

Krishna Gupta

Krishna Ballabh Gupta is a Gold Medalist Full Stack Developer & Algorithm Designer and Founder of TechnologyShouters. He generally Blogs about Python, JavaScript, jQuery, AngularJS, Database, PHP, AJAX and something that interesting.

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