如何array_merge_recursive()数组？

Question

我刚刚开始了解array_merge_recursive()是如何工作的。

有人能告诉我如何在数组中使用这个php函数吗？

我想做以下几点：

$ars[] = array("name_a" => array("color" => array("red")));
$ars[] = array("name_a" => array("color" => array("green", "blue")));
$ars[] = array("name_b" => array("color" => array("green", "tangerine")));
$ars[] = array("name_c" => array("color" => array("purple", "blue","red")));
$ars[] = array("name_c" => array("color" => array("green", "blue","green","beige")));
$ars[] = array("name_b" => array("color" => array("green", "blue","yellow")));

$result = array_merge_recursive($ars);

因为一些我不知道的原因，这是行不通的。它为我工作的唯一方式是：

$ars1 = array("name_a" => array("post_id" => array("red")));
$ars2 = array("name_a" => array("post_id" => array("green", "blue")));
$ars3 = array("name_b" => array("post_id" => array("green", "blue")));
$ars4 = array("name_c" => array("post_id" => array("green", "blue","red")));
$ars5 = array("name_c" => array("post_id" => array("green", "blue","green","beige")));
$ars6 = array("name_b" => array("post_id" => array("green", "blue","yellow")));
$result = array_merge_recursive($ars1,$ars2,$ars3,$ars4,$ars5,$ars6);

那么，如何在array_merge_recursive();函数中放置一个数组呢？

Answer 1

如果要使用映射为args的数组调用array_merge_recursive();或任何其他函数，可以使用：

$result = call_user_func_array('array_merge_recursive', $ars);

从PHP5.6开始，有一个特殊的操作符：

$result = array_merge_recursive(...$ars);

Answer 2

我想你回答了你自己的问题，不是吗？

array_merge_recursive()需要两个数组类型的参数，以便您可以“合并”它们。你到底在和一个数组合并什么？