What is the significance of the error message "File 'c:\mysql\share\charsets\?.conf' not found" in relation to PHP and MySQL?

The error message "File 'c:\mysql\share\charsets\?.conf' not found" indicates that MySQL cannot locate the character set configuration file. This can be resolved by specifying the correct path to the character set configuration file in the MySQL configuration.

// Specify the path to the character set configuration file in the MySQL configuration
mysqli_options($connection, MYSQLI_READ_DEFAULT_FILE, "C:/mysql/my.ini");