我应该在哪个文件夹中保留自定义函数文件？

Question

I have some custom functions in 'custom_functions.php' which I call from my controllers.

my 'custom_functions.php' code is like :

class Custom_functions extends CI_Controller  {

    public function __construct() {
        parent::__construct();
        $this->load->model('model');
        $this->load->library('session');
    }

public function data($first, $next) {
// other codes start from here
}
}

I kept that file in application/libraries and loaded in controller:

class Home extends CI_Controller {

    public function __construct() {
        parent::__construct();
        $this->load->model('model');
        $this->load->library('pagination');
        $this->load->library('custom_functions');
    }

// other codes start from here
}

then my custom function worked but the pagination wasn't working.

I get an error message:

A PHP Error was encountered

Severity: Notice

Message: Undefined property: CI_Loader::$pagination

Filename: views/index.php

Line Number: 27

While the view file 27th line is:

echo $this->pagination->create_links();

if I remove

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

then the pagination line works. why this happens ? did I do wrong to load my custom function or I kept my custom function in wrong folder ? in which folder should I keep my 'custom_functions.php' file ?

Answer 1

You need to instantiate your library

class sample_lib
{
  private $CI=null
  function __construct()
  {
    $this->CI=& get_instance();
  }
}

class Custom_functions  {
    private $CI = null;
    public function __construct() {
        $this->CI=& get_instance();
        parent::__construct();
        $this->CI->load->model('model');
        $this->CI->load->library('session');
    }

    public function data( $first, $next ) {
        // other codes start from here
    }
}

then to call in your controller:

echo $this->Custom_functions->data( $first, $next );