The ACF group field is a repeater field that always has one row. The value of the field will never be empty. There are several ways you can check this.
// check each value in a loop;
$values = get_field('total', $curauth);
$empty = true;
if (is_array($values)) {
foreach ($values as $field_name => $value) {
if ($value) {
$empty = false;
break;
}
}
}
if (!$empty) {
//.....
}
// check using array_filter()
$values = get_field('total', $curauth);
$empty = true;
if (is_array($values) && count(array_filter($values)) != 0) {
$empty = false;
}
if (!$empty) {
//...
)
