About This Tool
The Online MySQL Test Client is a simple, secure browser-based utility designed to verify MySQL and MariaDB database connections instantly. It accepts standard connection parameters and tests connectivity over the standard PHP PDO driver — no need to install a CLI client.
It's ideal for debugging firewall issues, validating a newly created database user, or quickly confirming a cloud database is reachable before wiring it into your application.
How to Use This Tool
Enter connection details
Fill in the host, port, username, password, and database name for your MySQL server.
Click "Test Connection"
The tool attempts a live connection over the standard PHP PDO MySQL driver.
View the result
See an instant success or failure response, including connection latency.
Common Use Cases
Troubleshoot Firewalls: Quickly verify if your remote MySQL server is accessible from external IP addresses.
Validate Credentials: Confirm newly created database users and passwords work correctly.
Test Cloud Databases: Check connectivity for AWS RDS, DigitalOcean Managed Databases, or a custom VPS instance.
Developer Convenience: Save time when setting up environment configurations for a new project.
Why Use This Tool
Instant Verification
Test connections in seconds without setting up a local client.
No Installation Required
Works entirely in your web browser.
Privacy Focused
Credentials are used only for the test and are never stored or logged.
Detailed Error Reporting
Returns precise connection errors (e.g., DNS failures, wrong passwords, access denied).
Latency Measurement
Indicates how fast the database responds to connection requests.
MariaDB Compatible
Works with both MySQL and MariaDB, since they share the same connection protocol.