如何检查多维关联数组是否为空

Question

I have an array as follows:

$list_array = array();

$list_array[] = array (
                 'id' => 1,
                 'name' => 'Sean',
                 'codename' => 'Maverick'
                 );

$list_array[] = array (
                 'id' => 2,
                 'name' => 'Matt',
                 'codename' => 'Diesel'
                 );

$list_array[] = array (
                 'id' => 3,
                 'name' => 'Bonnie',
                 'codename' => 'Princess'
                 );

I am trying to figure out how I can check to see if it's empty. I look on the site and tried a couple of things, but it's not working. Here are the things I've tried.

Attempt 1:
if (empty($list_array)
    echo "Array is empty";


Attempt 2:
$arr_empty = true;
$arr_length = count($list_array);
echo "Length: " . $arr_length . "<br>";
for ($z=1; $z<=$arr_length; $z++)
{
    $arr_length2 = count($list_array[$z]);
    echo $z . " Length2: " . $arr_length2 . "<br>";
    if (empty($list_array[$z]))
        echo $z . " Is Empty<br>";
}

I feel like I'm missing the obivious here.

Answer 1

empty should work:

if (empty($list_array))
    echo "Array is empty";
else
    echo "Array is not empty";

Your loop does not work because PHP arrays are zero based, you should start with zero and continue while $z < $arr_length