Codeigniter：Message：在null上调用成员函数行（）

Question

Codeigniter:

I am doing this in language/english/pages/about-me_lang.php:

<?php echo $this->lang->line('url_Contact')?>

and I am given this error:

Message: Call to a member function line() on null

so $this doesn't have lang...

What should I use to get lang line variable?

And how to know that is $this anyway? I mean in the whole thing (Codeigniter)

Thanks

Update 1:

it is here, in these files that nothing with $this-> will work, like $this->load or $this->lang.

What is $this here and how to get $this that I can load files there?

Update 2:

$this is applicable inside a class context.

So it means that a php file in views folder belongs to a class (is it from a controler class context?), but php file under language isn't, hm...

Update 3:

So, in view we have CI_Loader and based on this: https://www.codeigniter.com/user_guide/libraries/loader.html

is responsible for what it is responsible :)

...but, under the language folder, we have a different thing:

because when I try: $this->load->model('functions');

i get:

Message: Undefined property: CI_Lang::$load

Now, how with CI_Lang class to get that variable?

Update 4:

Found the solution, posted it as separate answer down below!

Answer 1

To get a line of text from a language file, but INSIDE files that are under language folder this is the solution:

<?php echo $this->line('url_Contact')?>

because, the class context there is CI_Lang.

Thanks Rinsad for mantioning class context.