数组 - 如何用新添加的记录替换记录

Question

I got the array below and I would like to keep recent added record which is [2] and delete others

Array ( 
[0] => Array ( [id] => 1 [is_sub] => 0 [product] => New [quantity] => 1 [price] => [total_item_price] => 0 [comments] => ) 
[1] => Array ( [id] => 1 [is_sub] => 0 [product] => Old [quantity] => 1 [price] => [total_item_price] => 0 [comments] => ) 
[2] => Array ( [id] => 4 [is_sub] => 0 [product] => Mix [quantity] => 1 [price] => [total_item_price] => 0 [comments] => ) )

Answer 1

i got an answer thanks for helping.

$last = array_slice($orders, -1, 1, true);