fetch('SELECT * FROM users WHERE phone_number = ?', [$phone]); if (!$user) { echo "User not found for phone $phone\n"; exit; } $rows = $db->fetchAll('SELECT * FROM conversations WHERE user_id = ? ORDER BY created_at DESC LIMIT 10', [$user['id']]); echo "User id: " . $user['id'] . "\n"; echo json_encode($rows, JSON_PRETTY_PRINT) . "\n";