直接将变量声明为数组
Array
(
[0] => humour
[1] => optimism
[7] => pistol
[8] => appraisal
[red] => red
[green] => green
)
用array()语言结构构建数组
Array
(
[red] => red
[0] => green
[3] => white
[4] => 5
[5] => black
)
数组元素“值”的访问
Array
(
[red] => #FF0000
[green] => green
[white] => white
[blue] => blue
[black] => black
)
我是1
我是2
string
string(4) "blue"