Follow offered steps to introduce CodeIgniter:
1) Download CodeIgniter from its official site.
Download current rendition of CodeIgniter from its official site
2) Unzip CodeIgniter bundle.
Downloaded CodeIgniter will be in zip position. Duplicate it and spot it in your htdocs envelope. Unfasten and rename it. We are naming it as CodeIgniter.
3) CodeIgniter user guide
On program type localhost/CodeIgniter/(after localhost type name of your unfastened envelope). In the event that the above depiction page shows up, at that point it implies your document is effectively introduced.
4) Set the base URL in application/config/config.php file with any text editor.5) You need to establish the connectivity to your database. Go to the path application/config/database.php file.
Take a gander at the above depiction, fill the insights concerning your database like hostname, username, secret word and database name.