一週有:7天:Sunday、Monday、Tuesday、Wednesday、Thursday、Friday、Saturday、
foreach 用法:Sunday,Monday,Tuesday,Wednesday,Thursday,Friday,Saturday,
Array ( [0] => Sunday [1] => Monday [2] => Tuesday [3] => Wednesday [4] => Thursday [5] => Friday [6] => Saturday )
mealArray = 7, 總和=49
sort排序結果:
Array
(
[0] => Array
(
[0] => Friday
[1] => 星期五
[2] => 芭樂
[3] => 7
)
[1] => Array
(
[0] => Monday
[1] => 星期一
[2] => 蘋果
[3] => 3
)
[2] => Array
(
[0] => Saturday
[1] => 星期六
[2] => 番茄
[3] => 10
)
[3] => Array
(
[0] => Sunday
[1] => 星期日
[2] => 香蕉
[3] => 7
)
[4] => Array
(
[0] => Thursday
[1] => 星期四
[2] => 梨
[3] => 15
)
[5] => Array
(
[0] => Tuesday
[1] => 星期二
[2] => 鳳梨
[3] => 2
)
[6] => Array
(
[0] => Wednesday
[1] => 星期三
[2] => 檸檬
[3] => 5
)
)
usort排序結果:
0 | Tuesday | 星期二 | 鳳梨 | 2 |
1 | Monday | 星期一 | 蘋果 | 3 |
2 | Wednesday | 星期三 | 檸檬 | 5 |
3 | Sunday | 星期日 | 香蕉 | 7 |
4 | Friday | 星期五 | 芭樂 | 7 |
5 | Saturday | 星期六 | 番茄 | 10 |
6 | Thursday | 星期四 | 梨 | 15 |
反向排序:Array ( [0] => Array ( [Eng] => Thursday [Cht] => 星期四 [Fruit] => 梨 [price] => 15 ) [1] => Array ( [Eng] => Saturday [Cht] => 星期六 [Fruit] => 番茄 [price] => 10 ) [2] => Array ( [Eng] => Sunday [Cht] => 星期日 [Fruit] => 香蕉 [price] => 7 ) [3] => Array ( [Eng] => Friday [Cht] => 星期五 [Fruit] => 芭樂 [price] => 7 ) [4] => Array ( [Eng] => Wednesday [Cht] => 星期三 [Fruit] => 檸檬 [price] => 5 ) [5] => Array ( [Eng] => Monday [Cht] => 星期一 [Fruit] => 蘋果 [price] => 3 ) [6] => Array ( [Eng] => Tuesday [Cht] => 星期二 [Fruit] => 鳳梨 [price] => 2 ) ) 1