Question

我刚刚开始了解array_merge_recursive()的工作原理。

有人能告诉我如何将这个php函数与数组一起使用吗？

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);

由于某种原因，我不知道，这是行不通的。它为我工作的唯一方式如下：

$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);

那么，我怎样才能在array_merge_recursive();函数中放入一个数组？

Answer 1

如果要调用array_merge_recursive();或任何其他具有映射为args的数组的函数，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

我认为你回答了你自己的问题吗？

array_merge_recursive（）需要两个数组类型的参数，以便您可以＆＃34; merge＆＃34;他们。你究竟与一个数组合并了什么？

如何使用array_merge_recursive（）数组？

2 个答案: