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Installation

• Install lampp using Following commands:

sudo apt-get install lamp-server^

• Installation of some dependencies (Server Requirement):

sudo apt-get -y install php-intl\
                     php-mbstring\
                     php-json\
                     php-mysqlnd\
                     php-xml\
                     php-curl

• Now download CodeIgnitor 4 from its website and extract the file at same directory or folder.

• After that you can their is big name of folder and also their are two folder of same name for convience rename the inner folder to ci or CI.

• Move the renamed folder at /var/www/html/, now switch to the directory where ci or CI is present and run following command from that directory.

sudo mv ci /var/www/html/

• Now to check all the step run following command and see:

cd /var/www/html/
ls

• If ci/CI folder is present then you have done with Installation and enviroment setup.

• Now you can see you have following file and folder under ci folder.

https://github.com/geekabhinav007/CodeIgnitorV4-guide/blob/main/img/intialDirectory.png

Intial Configuration

• Open the app/Config/App.php comment out baseURL at line 27 and add new base url as following:

public $baseURL = 'http://localhost/ci/public/';

Note : If you will be running your site using a web server (e.g., Apache or Nginx), you will need to modify the permissions for the writable folder inside your project, so that it is writable by the user or account used by your web server.

• use following command to give executable permission to writable directory under ci directory:

sudo chmod -R 777 writable/

• if you are not able to see Welcome page like below at http://localhost/ci/public then restart your server by using following command:

https://github.com/geekabhinav007/CodeIgnitorV4-guide/blob/main/img/Welcomepage.png

sudo systemctl restart apache2.service

Thanks for following tutorial.