$columns = array("ImageName1", "ImageName2", "ImageName3", "ImageName4");
$nullCount = 0;

foreach ($columns as $column) {
$query = "SELECT COUNT(*) FROM table_name WHERE $column IS NULL";
$stmt = $conn->prepare($query);
$stmt->execute();
$nullCount += $stmt->fetchColumn();
}

echo $nullCount;


//mobilde ancak bu kadar arraye tüm sutunları aktarın.