我对编程完全陌生,我的任务是更改数组的结构,但我无法让它工作。
这是原始数组:
[0] => Array
(
[att_values_id] => 5
[att_value] => Sloping
[att_id] => 5
[att_category] => Frame
)
[1] => Array
(
[att_values_id] => 13
[att_value] => Time Trial
[att_id] => 5
[att_category] => Frame
)
[2] => Array
(
[att_values_id] => 21
[att_value] => Mountain
[att_id] => 5
[att_category] => Frame
)
[3] => Array
(
[att_values_id] => 15
[att_value] => Carbon
[att_id] => 3
[att_category] => Material
)
[4] => Array
(
[att_values_id] => 15
[att_value] => Titanium
[att_id] => 9
[att_category] => Frame
)
[5] => Array
(
[att_values_id] => 15
[att_value] => Aluminum
[att_id] => 17
[att_category] => Frame
)
[6] => Array
(
[att_values_id] => 7
[att_value] => Expensive
[att_id] => 12
[att_category] => Price
)
[7] => Array
(
[att_values_id] => 7
[att_value] => Moderate
[att_id] => 33
[att_category] => Price
)
[8] => Array
(
[att_values_id] => 7
[att_value] => Entry Level
[att_id] => 40
[att_category] => Price
)
我必须将其更改为:
Array
(
[Frame] => Array
(
[5] => Sloping
[13] => Mountain
[21] => Time Trial
)
[Material] => Array
(
[3] => Carbon
[9] => Titanium
[17] => Aluminum
)
[Price] => Array
(
[12] => Expensive
[33] => Moderate
[40] => Entry Level
)
)
我曾尝试使用 foreach 来遍历数组,但我不知道如何构建新数组。