返回键值数组的PHP函数

我有一个这样的数组

Array
(
    [0] => Array
        (
            [id] => 10651            
            [userid] => 079eb9f4b9eb573f6aec93ce97ed1e7f
        )
    [1] => Array
        (
            [id] => 74315
            [userid] => 1283612836
        )
    [2] => Array
        (
            [id] => 74315
            [userid] => asydk12893489123
        )
)

func($arr_name, $key_name);

如果我这样调用，是否有一个php函数可以返回键

userid

的值数组

Array
(
    [0] => Array
        (
            [id] => 10651            
            [userid] => 079eb9f4b9eb573f6aec93ce97ed1e7f
        )
    [1] => Array
        (
            [id] => 74315
            [userid] => 1283612836
        )
    [2] => Array
        (
            [id] => 74315
            [userid] => asydk12893489123
        )
)

func($arr_name, $key_name);

---

不，但是你可以做一个

function getFromKey($array, $keyName) {
    $return = array();
    foreach ($array as $value) {
        if (isset($value[$keyName]))
            $return[] = $value[$keyName];
    }

    return $return;
}