Why Does My MySQL Connection Show "No such file or directory" Error?

Troubleshooting "No such file or directory" Error in MySQL Connection

When connecting to a MySQL database using PHP, you may encounter the error message "Warning: mysqli_connect(): (HY000/2002): No such file or directory." This error typically indicates that the specified connection parameters are incorrect.

In the provided code snippet, the following connection parameters are used:

• Host: "localhost"
• Username: "vanilla_user3"
• Password: "vanilla_password"
• Database: "vanilla"

The error suggests that the host parameter, "localhost," is incorrect. In this case, the correct host to use is the IP address "127.0.0.1."

Understanding Host Parameter

The host parameter specifies the location of the MySQL server to which you are trying to connect. "localhost" is a special hostname that refers to the local machine on which the PHP script is running. However, some MySQL configurations may require using the actual IP address instead of "localhost."

By using the IP address "127.0.0.1" as the host, you are explicitly specifying the local MySQL server. This IP address is reserved for loopback connections and always refers to the local machine.

Solution

To resolve this error, modify the host parameter in the MySQL connection string to use "127.0.0.1" instead of "localhost." The updated code should resemble the following:

$con = mysqli_connect("127.0.0.1", "vanilla_user3", "vanilla_password", "vanilla");

Once the host parameter is corrected, you should be able to establish a successful connection to the MySQL database without encountering the "No such file or directory" error.

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