how to require_once in codeigniter

Question

I am trying to extend a library in codeigniter. The only way to do so seems to include the original library using require_once then load the extended library us

Answer 1

Use CodeIgniter's built in constant, APPPATH

require_once(APPPATH.'libraries/ion_auth.php');

Answer 2

Do you know that Codeigniter has a loader class?

change this

require_once('/home/SITE_NAME/public_html/FOLDER_NAME/application/libraries/ion_auth.php')

to

$this->load->library('ion_auth');

and be sure your libraries/ion_auth.php file it's a class named `class ion_auth{}`

Answer 3

In a real server, you should use library's UPPERCASE name. like this:

require_once(APPPATH.'libraries/Ion_auth.php');

Answer 4

If the library is a codeigniter specific library, as sbaaaang points out, you should use:

$this->load->library('ion_auth');

However, if the library is just a generic PHP class or set of functions, the codeiginter loader may not recognize it. Then you will need to use either one of the generic loading operators (include, include_once, require, require_once), with the APPPATH constant, as also pointed out:

require_once(APPPATH.'libraries/ion_auth.php');