mysql pdo数据库连接

MYSQL

$conn = @mysql_connect('localhost','root','root');//括号的里的分别代表主机、用户名、密码

mysql_select_db('test',$conn);//选择库

mysql_query('set names gbk',$conn);//设置字符集

$sql ="select * from news ";

$result = mysql_query($sql,$conn);

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PDO

$dsn = "mysql:host=127.0.0.1;dbname=test";

$db = new PDO($dsn, 'root', 'root');

$rs = $db->query("SELECT * FROM save");

$result_arr = $rs->fetchAll();

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mysqli

$mysql = new mysqli('127.0.0.1','root','root','dd');
//dump($mysql);die;
$mysql->set_charset('utf8');
$sql="insert into suoyin values('','然','10000','sdsdasdasfsdfd')"
$mysql->query($sql);