prepare("DELETE FROM messages WHERE id = ?"); if (!$query) { http_response_code(500); die("Error: {$conn->error}"); } if (!$query->bind_param("i", $id)) { http_response_code(400); die("Error: message ID must be an integer."); } if (!$query->execute()) { http_response_code(500); die("Error {$query->errno}: {$query->error}"); } if ($query->affected_rows === 0) { http_response_code(400); die("Error: that message does not exist"); } else { die("Removed message $id successfully."); }