PHP5 连接mysql数据类
@ $db = new mysqli_connect(主机,用户名,密码,数据库名); //连接数据库
$sql = "";
$result = $db->query($sql); //执行sql语句
$num_results = $result->unm_rows; //返回行数
$row = $result->fetch_row($result); //取出一行数据 或用
$row = $result->object(); //将一行数据返回到一个对象里 例如 $row->title
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