私はこの配列を持っています
[2] => Array
(
[0] => 1160
[1] => 1155
[2] => 06/26/2013
[3] => 32.99
)
[3] => Array
(
[0] => 1160
[1] => 1155
[2] => 06/26/2013
[3] => 0.00
)
[4] => Array
(
[0] => 1160
[1] => 1155
[2] => 06/24/2013
[3] => 20.99
)
[5] => Array
(
[0] => 1160
[1] => 1155
[2] => 06/24/2013
[3] => 10.78
)
質問 :: 「order_id」配列 [0] 同じ値に基づいて、「金額」配列 [3] を合計したい
これの解決策を教えてください