Home >Backend Development >PHP Tutorial >Why Am I Getting a MySQLi 'Access Denied' Error?
Why Am I Getting a MySQLi 'Access Denied' Error?
- Barbara StreisandOriginal
- 2024-12-15 12:35:10283browse
Revisiting MySQLi Access Denied Error
While attempting to establish a MySQL connection, you encounter the dreaded error message:
Warning: mysqli_connect(): (HY000/1045): Access denied for user 'username'@'localhost' (using password: YES)
This error frustrates many developers, especially when their configuration file appears correct.
Verifying Credentials
Before delving into the code, it's crucial to verify that the credentials provided are accurate:
- DB_HOST: Ensure that the hostname is correct, indicating the IP address or domain name of the MySQL server.
- DB_USER: Check if the specified username exists in the database and has been granted access to the database you're attempting to connect to.
- DB_PASSWORD: Confirm that the password is correct and that it has not been recently changed.
Incorrect Configuration File
If the credentials are valid, the issue may lie within the configuration file. Specifically, the following variables should be reviewed:
- DB_SERVER: Is this variable correctly set to the MySQL server host? Double-check it matches the value in DB_HOST.
- DB_USERNAME: Ensure this variable stores the actual MySQL username granted access to the database.
- DB_PASSWORD: Verify that this variable contains the correct password.
- DB_DATABASE: Check if the specified database name exists and that the user has the appropriate permissions to connect to it.
Other Considerations
In addition to the code and credentials, consider the following:
- Server Permissions: Check the MySQL server permissions to verify that the user attempting to connect has the necessary privileges.
- Firewall Settings: Ensure that the firewall is configured to allow connections to the MySQL server.
- Reloading Grants: Sometimes, database grants require reloading to take effect. Use the FLUSH PRIVILEGES command to reload them.
The above is the detailed content of Why Am I Getting a MySQLi 'Access Denied' Error?. For more information, please follow other related articles on the PHP Chinese website!