check multidimensional array存在另一个多维数组

Question

我必须遵循以下不同的多维数组：

Array
(
    [1] => Array
        (
            [0] => 1
            [1] => 2
        )

    [2] => Array
        (
            [0] => 1
        )

)
Array
(
    [1] => Array
        (
            [0] => 1
            [1] => 2
        )

    [2] => Array
        (
            [0] => 1
            [1] => 2
        )

    [3] => Array
        (
            [0] => 1
        )

)

我想检查较大的数组中是否存在小的多维数组。有任何建议请。 我正在使用

$diff = Hash::diff(samllarray, $bigger array); 

cakephp的

及其结果是

Array
(
    [2] => Array
        (
            [0] => 1
        )

    [3] => Array
        (
            [0] => 1
        )

)

但结果我只想要第3个键，但它也给了我第2个键，见上面

Answer 1

您可以使用is_array()查看变量是否为数组。

$arrs = array(
    0 => "big array",
    1 => "big array",
    3 => array(
        0 => "nested array",
        1 => "nested array"
    )
);

foreach ($arrs as $key=>$value) {
    if (is_array($value)) {
        echo "we've got an array at index {$key}";
    }
}