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。
1 2 3 4 5 6 7 8 9 10 11 12 13 | $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，
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | $blockOrder = [ "title", "subtitle", "price", "on-site-message", "variants", "count", "merit-0", "merit-1", "merit-2", "merit-3", "payment"];print_r($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
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | 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) |
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