PHP插入mysql数据乱码

CREATE TABLE `feedback` (
`id` INT(32) UNSIGNED NOT NULL AUTO_INCREMENT,
`create_date` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
`user_id` VARCHAR(50) NOT NULL COLLATE 'latin1_swedish_ci',
`note` VARCHAR(400) NOT NULL,
PRIMARY KEY (`id`),
INDEX `user_id` (`user_id`)
)
COLLATE='utf8_general_ci'
ENGINE=MyISAM
AUTO_INCREMENT=3
;

$con->query("set names 'utf8'");

mysql_query("set names 'utf8'",$conn);