Check if an array is empty (not counting for keys)

Question

I can't find out how to check if an array is empty. I know empty() means 100% empty, including keys. But my array looks like this when there are (in this case) no products:

Array
(
    [0] => 
)

How can I check if an array is empty like that? Preferably only for this exact "array list" because on a page that does have products I also have [0] => as first value, which I filter out (but this is after I need to check for the empty array).

Edit:

if(empty(array_values($relatedcr))){
    echo 'empty';
}else{
    echo 'not empty';
}

Answer 1

get the value as array, then check it.

empty(array_values($array));

Here is a test code:

<?php 
$array=[1];
unset($array[0]);
var_dump($array);
var_dump(empty($array));
var_dump(['']);
var_dump(empty(['']));

output: demo here

array(0) {
}
bool(true)
array(1) {
  [0]=>
  string(0) ""
}
bool(false)