array_flip某些键

Question

用键2翻转键1的好方法是什么？

// original
Array
(
    [0] => Text1
    [1] => World
    [2] => Hello
)

// after

Array
(
    [0] => Text1
    [1] => Hello
    [2] => World
)

任何线索。感谢

Answer 1

如果这很简单，

$tmp = $array[1];
$array[1] = $array[2];
$array[2] = $tmp;

Answer 2

$A = array("Text1", "Hello", "World");
$tmp = $A[2];
$A[2] = $A[1];
$A[1] = $tmp;