从codeigniter中的关联数组中取消设置键

Question

How would I unset category[1] from the below array?

Array
(
    [category] => Array
        (
            [0] => add new
            [1] => second
        )
)

Can't seem to get the right code.

This is for codeigniter's session class

$this->session->unset_userdata($array['category'][$session_id]); 

is the above correct? or is there something else - that's not working.

Answer 1

Assuming your array name is $array:

unset( $array['category'][1] );

Another way is, array_pop()

array_pop( $array['category'] );