Equivalent of unset using jinput

Question

How can I do the below using Joomla API JFactory::getApplication()->input;

unset($_GET["variable1"]); 

Answer 1

TL;DR: there is no equivalent, because it's not needed.

JInput data is by default a reference to $_REQUEST, so it dosen't have own unset method, because it is not needed. Although it would be nice to have $input->unset('variable1'); for completness of API.

You should use plain PHP, e.g unset($_REQUEST['variable1']);. If you have your variable in $_GET, you can unset by that, if you prefer.

Although you can always use $input->set('variable1', null);, but this way PHP carbage collector won't free memory, since variable is still defined.