NSArray'；s valueForKey：PHP中的等效值

在Objective-C中有

-[NSArray valueForKey:

。但是php中的等价物是什么？我想要这样的东西：

$things = [['name' => 'Frank', 'age' => 14],'name' => 'bob',['name' => 'Joe', 'age' => '85']];
$names = valueForKey($things, 'name');

我希望

$names

等于：

$names = ['Frank', 'Bob', 'Joe'];

我该怎么做

$things = array(array('name' => 'Frank', 'age' => 14),array('name' => 'bob'),array('name' => 'Joe', 'age' => '85'));
$names = array();
foreach ($things as $item) {
    foreach ($item as $key => $value) {
        if ($key == "name") {
            $names[] = $value;
        }
    }
}

print_r($names);

结果:

Array
(
    [0] => Frank
    [1] => bob
    [2] => Joe
)

Array
(
    [0] => Frank
    [1] => bob
    [2] => Joe
)

递归解决方案： 使用

array\u walk\u recursive

witch为数组中的每个元素执行回调函数

function callback($item, $key){
    if ($key == "name") $names[] = $item;
}
array_walk_recursive($things, 'callback');

print_r($names);

结果:

Array
(
    [0] => Frank
    [1] => bob
    [2] => Joe
)

Array
(
    [0] => Frank
    [1] => bob
    [2] => Joe
)

---

好的，谢谢，但是有没有一种方法可以使它递归，而不仅仅是两层？