Bug: public function getJsonVar error in the code

[amigoscs]

PHP Version

8.0

CodeIgniter4 Version

4.1.2

CodeIgniter4 Installation Method

Manual (zip or tar.gz)

Which operating systems have you tested for this bug?

Linux

Which server did you use?

apache

Database

No response

What happened?

If "null" is sent to the server and when trying to get data through "Services :: request () -> getVar('myKey')", the error "Argument 2 passed to dot_array_search () must be of the type array..."

Steps to Reproduce

I am sending a POST request without data

Expected Output

Services :: request () -> getVar ('myKey') function should return "null"

Anything else?

File:
system/HTTP/IncomingRequest.php

public function getJsonVar()

Line 540: $data = dot_array_search($index, $this->getJSON(true));

if $this->getJSON(true) returns null then an error appears

Solution:

$getJson = $this->getJSON(true) ?: [];
$data = dot_array_search($index, $getJson);

[kenjis]

Thank you for reporting. I confirmed the TypeError in develop branch.

<?php
namespace App\Controllers;
class Home extends BaseController
{
    public function index()
    {
        d($this->request->getJsonVar('myKey'));
    }
}

$ php public/index.php 


[TypeError]

dot_array_search(): Argument #2 ($array) must be of type array, null given, called in /Users/kenji/work/codeigniter/CodeIgniter4/system/HTTP/IncomingRequest.php on line 540

at SYSTEMPATH/Helpers/array_helper.php:21

Backtrace:
  1    SYSTEMPATH/HTTP/IncomingRequest.php:540
       dot_array_search('myKey', null)

  2    APPPATH/Controllers/Home.php:9
       CodeIgniter\HTTP\IncomingRequest()->getJsonVar('myKey')