Why Am I Getting a \'No Connection Could Be Made\' Error When Connecting to MySQL?

MySQL Connection Refusal: "No Connection Could Be Made"

When attempting to execute a PHP MySQL script, users may encounter the following error:

mysql_connect(): No connection could be made because the target machine actively refused it

This error indicates that a connection cannot be established due to an active rejection from the target machine hosting the MySQL server. The problem is not with the PHP code itself, but rather with the network configuration or server settings.

Solution

To resolve this issue, consider the following steps:

• Verify Connection Port: Ensure that your script is attempting to connect to the correct port, which is usually 3306.
• Use 127.0.0.1: Try connecting to the server using the IP address 127.0.0.1 instead of "localhost." This may resolve the issue if the server is listening on 127.0.0.1.
• Check UDP/TCP: The error can also occur if the server is listening on UDP instead of TCP. Verify your connection settings to ensure that TCP is being used.
• Firewall Check: Ensure that your firewall is not blocking the connection to the MySQL server. Allow traffic on port 3306 in your firewall settings.

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