遍历多维数组[关闭]

Question

Have the array below and need to access id but can't get it to work. Don't know how to access 3rd level of array.

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

    )

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

    )

[2] => Array
    (
        [0] => Array
            (
                [id] => 3
            )

    )

[3] => Array
    (
    )

[4] => Array
    (
        [0] => Array
            (
                [id] => 5
            )

    )
}

Answer 1

In your example it looks as though id is always in a separate array with the key of 0;

1, Hard code:

foreach($array as $value){
    echo isset($value[0]['id']) ? $value[0]['id'] : '';
}

2, iterate though second array:

foreach($array as $key=>$value){
    if(is_array($value)){
        foreach($value as $v){
            if(isset($v['id'])){
                echo $v['id'];
            }
        }
    }
}