我如何计算二维数组 - PHP

Question

Array
(
    [0] => Array
    (
        [not_valid_user] => Array
        (
            [] => asdsad
        )
    )
    [1] => Array
    (
    )
    [2] => Array
    (
        [not_valid_user] => Array
        (
            [] =>  asdasd
        )
    )
)

I need the count of array [not_valid_user]

For example:

The above arrays count is 2. How can i get it?

Thanks in advance...

Answer 1

$invalidUsersFound = 0;
foreach ( $data as $k => $v ) {
  if ( IsSet ( $v['not_valid_user'] ) === true )
    $invalidUsersFound++;
}

This should do the trick.