[Alex1Strakhov]

In CI3:

config/autoload.php

PHP Code:

$autoload['libraries'] = array('test_lib'); 


controller/Test.php

PHP Code:

class Test extends CI_Controller
{

    public function index()
    {
        echo $this->CI->test_lib->variable;

        $this->CI->test_lib->method();
    }

} 


The library was connected automatically, access to it was in any part of the project.


How to make it so that in CI4 was like this:

PHP Code:

class Test extends CI_Controller
{

    public function index()
    {
        echo TestLib->variable;

        TestLib->method();
    }

} 


[InsiteFX]

See the CodeIgniter 4 ./application/Config/Autoload.php

CodeIgniter 4 Users Guide - Autoloading Files

[titounnes]

In CI3:

config/autoload.php

PHP Code:

$autoload['libraries'] = array('test_lib'); 


controller/Test.php

PHP Code:

class Test extends CI_Controller
{

    public function index()
    {
        echo $this->CI->test_lib->variable;

        $this->CI->test_lib->method();
    }

} 


The library was connected automatically, access to it was in any part of the project.


How to make it so that in CI4 was like this:

PHP Code:

class Test extends CI_Controller
{

    public function index()
    {
        echo TestLib->variable;

        TestLib->method();
    }

} 


in CI4, more simple.
$myLib = (new \App\Libraries\MyLib)->method();
print_r($myLib);