无法访问codeigniter库中的功能

Question

New to PHP, oop & codeigniter. My CI version is 3.1.2.

I am trying to load a library that I built, trying to understand Object oriented principles. Probably I'm missing something.

Below is my library.

<?php
class DPS {
    private $mode;

    public function __construct($params){
        //print_r($params);
        $this->mode = $params['mode'];
    }   

    public function get_url(){
        if($this->$mode == "TEST"){
            return "https://uat.paymentexpress.com/pxaccess/pxpay.aspx";
        } elseif($this->$mode == "LIVE"){
            return "https://sec.paymentexpress.com/pxaccess/pxpay.aspx";
        }
    }
}
?>

I'm trying to access the get_url method in the controller below.

$params = [ 'mode' => 'TEST'];
$dps = $this->load->library('DPS',$params);     
echo $dps->get_url();

Codeigniter is throwing the below error message.

Fatal error: Call to undefined method CI_Loader::get_url()

Being a newbie I'm probably missing some sort of OO fancy thingi. I just can't figure it out. Any help is greatly appreciated.

Thank you in advance

Answer 1

Try this,

$this->load->library('dps',$params);     
echo $this->dps->get_url();