如何在CodeIgniter中进行HTTP GET？

Question

Let's say I have a table called user

I want to make a HTTP call roughly like this http://my.awesome.server/dev_api/index.php/login/get_user.php?user=steven&password=12345

Which checks the database if there's a user 'steve' with the password '12345'. These are my codes.

controller

<?php
if(!defined("BASEPATH")) exit("No direct script access allowed");

class login extends CI_Controller
{
  public function index()
  {
    $this->load->model("login_model"); 
    $data["users"]=$this->login_model->get_user(); 

    $this->load->view("login_view", $data);
  }
} 

model

    class Login_model extends CI_Model {

        function get_user(){
            // get username, like $_GET['user']
            $user = $this->input->get('user');

            // get the password and MD5-ed it, like md5($_GET['password'])
            $md5_pass = md5($this->get('password'));

            // the where condition
            $this->db->where(array('userName' => $user, 'password' => $md5_pass)); 

            // ok, now let's query the db
            $q = $this->db->get('user');

            if($q->num_rows() > 0){

                foreach ($q->result() as $row){
                    $data[] = $row;
                }
            }
            return $data;
        }
    }

?>

view

<?php

if (!empty($users)){
    foreach ($users as $u){
        echo $u->userId .' '. $u->userName.' '.$u->password.' ';
    }
}

?>

Then I opened this on browser: http://my.awesome.server/dev_api/index.php/login/. The result is

How to properly make a HTTP call, then?

Answer 1

You are trying to work against the framework you are using.

CodeIgniter abstract working with GET parameters by proposing you to use URL segments.

The URI scheme in CodeIgniter is as follow (see docs): controller/method/params...

It is divided in segments:

1. the controller (mandatory)
2. the method (mandatory, but may be implied in case of index, see below)
3. the first param (optional)
4. the second param (optional)
5. ... and so on

You want to use the method index() of the controller Login, it translates to

http://my.awesome.server/dev_api/index.php/login/index

Also, with mode_rewrite activated with htaccess, it could be simplified in

http://my.awesome.server/dev_api/login/index

Now, index() is a special method as it is the one called by default in a controller. Hence the final URL would be:

http://my.awesome.server/dev_api/login

Now, if you want to pass parameters to your function, CodeIgniter does this through subsequent segments.

But you need to declare them in the controller method.

class login extends CI_Controller
{
    public function index($user = null, $password = null)
    { 
        // Check for $user / $password emptiness

        // ...

        // Use $user / $password as needed
        $data["users"]=$this->login_model->get_user($user , $password); 

        // use the results...
    }
}

And now you could call with:

http://my.awesome.server/dev_api/login/index/steven/12345

Notice that I've put index in the URL? It's because when passing parameters, the method is mandatory.

---

That said, I will reiterate what other people have said:

1. Avoid passing login/password through GET. Prefer POST.
2. Use an encrypted connection (HTTPS)
3. Do NOT hash your password with md5 or even sha1. You need a strong algorithm. You also need to salt. Anyway, PHP got you covered with password_hash. Don't reinvent the wheel.

Good luck.