PDO_MYSQL是PHP Data Objects (PDO) erface个mysql扩展仔细看看php手册上面其实还是有些有趣参数可供使用例如:

PDO::MYSQL_ATTR_INIT_COMMAND (eger)
Command to execute when connecting to the MySQL server. Will automatically be re-executed when reconnecting.

　　当我使用PDO_MYSQL连上mysql以后可以利用这个参数自动执行些QUERY最常见使用场合是连接mysql使用utf-8集:

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CODE:
$db = PDO("mysql:dbname=dbname","user","password", .gif' />(PDO::MYSQL_ATTR_INIT_COMMAND=>"SET NAMES 'utf8'"));

　　以上代码会在连上mysql的后马上执行sql:

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CODE:
names'utf8';