如何array_merge_recursive（）一个数组？

Question

我刚刚开始了解array_merge_recursive()工作方式。

有人可以告诉我如何在数组中使用此php函数吗？

我正在尝试执行以下操作：

$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);

由于某种我不知道的原因，这是行不通的。 它为我工作的唯一方法如下：

$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);

因此，如何将数组放入array_merge_recursive(); 功能？

Answer 1

如果要调用array_merge_recursive(); 或具有映射为args的数组的任何其他函数，可以使用：

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

从PHP 5.6开始，有一个特殊的运算符：

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

Answer 2

我认为您回答了自己的问题，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。 您究竟要与一个阵列合并什么？