Get $_POST['item'] within a Plugin?

Not really sure about this from the documentation, but is there a way to grab $_POST data from a form on a page within a plugin?

Ordinary PHP looks like this:

public function item1(){
  $item1 = $_POST['item1'];
  return $item1;

The only way I can get it to work is if I call $_POST from within the template, but I'd like to call it via the plugin.

Answered by Jason Varga!
>>>>>>> Answered <<<<<<<
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