Question

我创建了一个工作函数，用于将后续关联数组拆分为两个数值数组。我想知道是否有更好的方法，避免循环。

我有一个数组如下。

Array
(
    [0] => stdClass Object
        (
            [CreatedAt] => 16/02/2014
            [Occurrence] => 1
        )

    [1] => stdClass Object
        (
            [CreatedAt] => 17/02/2014
            [Occurrence] => 8
        )

    [2] => stdClass Object
        (
            [CreatedAt] => 18/02/2014
            [Occurrence] => 4
        )

    [3] => stdClass Object
        (
            [CreatedAt] => 20/02/2014
            [Occurrence] => 11
        )

)

需要将其转换为两个数值数组

Array
(
    [0] => 16/02/2014
    [1] => 17/02/2014
    [2] => 18/02/2014
    [3] => 20/02/2014
)

Array
(
    [0] => 1
    [1] => 8
    [2] => 4
    [3] => 11
)

我使用了foreach循环

$array1 = array();
$array2 = array();
foreach ($mainArray as $key => $value) {
    $array1[] = $value->CreatedAt;
    $array2[] = $value->Occurrence;
}
print_r($array1);
print_r($array2);

但是如果我在mainArray中有1000行，则会影响性能。如果您有更好的解决方案，请大家知道。

Answer 1

试试这个：

$objName = (object) array('aFlat' => array());

    array_walk_recursive($array, create_function('&$v, $k, &$t', '$t->aFlat[] = $v;'), $objName);

    var_dump($objName->aFlat);

参考： How to "flatten" a multi-dimensional array to simple one in PHP?

Answer 2

http://in1.php.net/array_column

可能这可以解决你的问题!!

如何在PHP中将多维关联数组转换为数值数组，而不进行循环？

2 个答案: