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$dsn = "mysql:host = $host;dbname = $dbname;charset = UTF-8";
echo $dsn.'<br/>';
try{
$dbh = new PDO($dsn,$user,$password);
echo'连接成功'.'<br/>';
} catch(PDOException $e) {
exit('数据库连接失败:'.$e->getMessage());
$dbh->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION);
$sql = "insert into test (name,sex,age) values('xi','femal','30')";
$dbh->exec($sql);
}