MySQL Connection Error: Why 'No Such File or Directory'?

Connecting to MySQL Database: Resolving "No Such File or Directory" Error

When attempting to connect to a MySQL database via PHP, one may encounter the error message: "Warning: mysqli_connect(): (HY000/2002): No such file or directory." This error indicates that the host specified in the connection parameters is incorrect.

Incorrect Host Specification

The error message suggests that the host specified as "localhost" is not recognized. In this instance, the issue lies in using "localhost" as the host parameter.

Resolution

To resolve this error, one should use the IP address of the MySQL server instead of "localhost." In most cases, this IP address is 127.0.0.1, which represents a local host connection.

Revised Code

The following revised code snippet uses the IP address of the MySQL server for the host parameter:

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

if (mysqli_connect_errno($con)) {
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
}

Recommendation

To avoid potential connectivity issues, it is advisable to always use the IP address of the MySQL server when specifying the host parameter. This ensures a reliable and secure connection to the database.

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