PHP 如何将对象数组与数组数组合并

Question

首先，抱歉冗长的解释。我在 PHP 中有两个数组。第一个数组是一个对象数组。第二个数组是数组的数组。基本上，我想循环遍历，并将对象与其匹配的数组合并，然后返回一个合并的对象。

见以下print_r()对象结构数组:

Array
(
[0] => stdClass Object
    (
        [gear] => helloworld
        [status] => running
        [started] => 40 Minutes Ago
        [start] => index.js
        [route] => 127.0.0.1:3000
        [parameters] => Array
            (
            )

    )

[1] => stdClass Object
    (
        [gear] => test
        [status] => stopped
        [started] => 
        [start] => index.js
        [route] => 
        [parameters] => Array
            (
            )

    )

[2] => stdClass Object
    (
        [gear] => test2
        [status] => stopped
        [started] => 
        [start] => index.js
        [route] => 
        [parameters] => Array
            (
                [0] => first
                [1] => second
                [2] => third
            )

    )

)

见以下 print_r()数组结构的数组:

Array
(
[0] => Array
    (
        [gear] => helloworld
        [machine_id] => E6z5ekvQ
        [created_by] => 10010
        [modified_by] => 10010
        [created] => 2011-09-22T16:30:11-07:00
        [modified] => 2011-09-22T16:30:11-07:00
    )

[1] => Array
    (
        [gear] => test
        [machine_id] => E6z5ekvQ
        [created_by] => 10010
        [modified_by] => 10010
        [created] => 2011-09-22T16:44:25-07:00
        [modified] => 2011-09-22T16:44:25-07:00
    )

[2] => Array
    (
        [gear] => test2
        [machine_id] => E6z5ekvQ
        [created_by] => 10010
        [modified_by] => 10010
        [created] => 2011-09-22T16:45:43-07:00
        [modified] => 2011-09-22T16:45:43-07:00
    )

)

所以基本上两者的匹配键是 gear .所以我们应该将第一个对象的齿轮与数组中的第二个齿轮匹配，并返回如下内容:

stdClass Object
    (
        [gear] => helloworld
        [status] => running
        [started] => 40 Minutes Ago
        [start] => index.js
        [route] => 127.0.0.1:3000
        [parameters] => Array
            (
            )
        [machine_id] => E6z5ekvQ
        [created_by] => 10010
        [modified_by] => 10010
        [created] => 2011-09-22T16:30:11-07:00
        [modified] => 2011-09-22T16:30:11-07:00
    )

请注意，齿轮已合并到对象的一个​​属性中，显然齿轮不会出现两次。想法？

Answer 1

如果您可以通过 gear 索引数组或者一些独特的值(value)，它会容易得多。

$indexed = array();

// create an array using 'gear' as the index
foreach($arrayValue as $value) {
    $indexed[$value['gear']] = $value;
}

// loop over each object
foreach($objectArray as $obj) {
    $value = $indexed[$obj->gear]; // find the corresponding array
    foreach($value as $name => $val) {
        $obj->$name = $val; // assign each array index/value pair to the object
    }
}

如果可能让您的代码默认返回带有索引的数组，您可以删除第一个 foreach 循环。

希望有帮助。