How to reload a custom library

Code:

closeOrders class already loaded. Second attempt ignored.

This has nothing todo with a page reload. This means you are loading that library twice

PHP Code:

$this->load->library('closeOrders'); 


Because a resource is appended to the CI super object, you can't load a resource twice.
If you provide an alias name for a library as a third argument when loading it, CI will create a new instance of that class and append it to the super object using the provided alias.

You can also just do this

PHP Code:

$second_closeOrders_object = new closeOrders(); 


Because the file is loaded into memory you can create a new instance of the class where ever you may need it.

If you don't want to do this, and want to re-use the first instance, create a method in the library that resets it be clearing all the variables

PHP Code:

$this->closeOrders->clear($new_values);