C:\xampp\mysql\bin 内に存在する「my.ini」を編集．mysqldの直下に下記文字列を追加．
[mysqld]
default-character-set = utf8
skip-character-set-client-handshake
同様にmysqldump, mysqlの直下にそれぞれ下記文字列を追加．
[mysqldump]
default-character-set=utf8
[mysql]
default-character-set=utf8
確認するには，コマンドプロンプトから mysql –u root でmysqlを起動し，show variables like "char%";と入力．
===== 設定前 =====
+--------------------------+----------------------------+
| Variable_name | Value |
+--------------------------+----------------------------+
| character_set_client | latin1 |
| character_set_connection | latin1 |
| character_set_database | latin1 |
| character_set_filesystem | binary |
| character_set_results | latin1 |
| character_set_server | latin1 |
| character_set_system | utf8 |
| character_sets_dir | |
+--------------------------+----------------------------+
===== 設定後 =====
+--------------------------+----------------------------+
| Variable_name | Value |
+--------------------------+----------------------------+
| character_set_client | utf8 |
| character_set_connection | utf8 |
| character_set_database | utf8 |
| character_set_filesystem | binary |
| character_set_results | utf8 |
| character_set_server | utf8 |
| character_set_system | utf8 |
| character_sets_dir | |
+--------------------------+---------------------- -----+