Get uploaded file data in CI 4

All of the parameters are in the $_FILES[] array.

PHP Code:

$file_name     = $_FILES["photo"]["name"]; 
$file_type     = $_FILES["photo"]["type"]; 
$file_size     = $_FILES["photo"]["size"]; 
$file_tmp_name = $_FILES["photo"]["tmp_name"]; 
$file_error    = $_FILES["photo"]["error"]; 


Where photo would be the input name.

Thank you.

But how to do this using CI4?

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