Array set to empty

So many array functions

[HeadBut]

Just want to empty an array:
$ILoveSushi[] = ""; seems to add an empty index. How do I make the whole array empty?

[Birdman]

You can do this:

$ILoveSushi = NULL;

or

unset($ILoveSushi);

...or, if you want to keep the variable as an array but completely empty it, do this:

$ILoveSushi = array();