在 PHP 7.4 中，在索引数组中添加元素至特定的位置（array_splice）
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。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，3、打印运行结果，符合预期。如图1
$blockOrder = [
"title",
"subtitle",
"price",
"on-site-message",
"variants",
"count",
"merit-0",
"merit-1",
"merit-2",
"merit-3",
"payment"
];
$blockOrder = [
"title",
"subtitle",
"price",
"on-site-message",
"variants",
"count",
"merit-0",
"merit-1",
"merit-2",
"merit-3",
"payment"
];
print_r($blockOrder);
$blockOrder2 = [
"automatic-discount-tag",
"automatic-discount-bxgety"
];
array_splice($blockOrder, 3, 0, $blockOrder2);
print_r($blockOrder);
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
)
