在 PHP 7.4 中，在索引数组中添加元素至特定的位置（array_splice）

图1

1、在索引数组中添加元素至特定的位置，现在计划添加 2 个元素，放在 price 之后。

$blockOrder = [
 "title",
 "subtitle",
 "price",
 "on-site-message",
 "variants",
 "count",
 "merit-0",
 "merit-1",
 "merit-2",
 "merit-3",
 "payment"
];

2、基于 array_splice — 去掉数组中的某一部分并用其它值取代，代码实现如下，

$blockOrder = [
 "title",
 "subtitle",
 "price",
 "on-site-message",
 "variants",
 "count",
 "merit-0",
 "merit-1",
 "merit-2",
 "merit-3",
 "payment"
];

print_r($blockOrder);

$blockOrder2 = [
 "automatic-discount-tag",
 "automatic-discount-bxgety"
];

array_splice($blockOrder, 3, 0, $blockOrder2);

print_r($blockOrder);

3、打印运行结果，符合预期。如图1

图1


Array
(
    [0] => title
    [1] => subtitle
    [2] => price
    [3] => on-site-message
    [4] => variants
    [5] => count
    [6] => merit-0
    [7] => merit-1
    [8] => merit-2
    [9] => merit-3
    [10] => payment
)
Array
(
    [0] => title
    [1] => subtitle
    [2] => price
    [3] => automatic-discount-tag
    [4] => automatic-discount-bxgety
    [5] => on-site-message
    [6] => variants
    [7] => count
    [8] => merit-0
    [9] => merit-1
    [10] => merit-2
    [11] => merit-3
    [12] => payment
)

永夜