254980080

摘要： $dsn = 'mysql:host=127.0.0.1;dbname=myblog'; $username = 'root'; $pwd = '111'; $pdo = new PDO($dsn,$username,$pwd); //$sql = 'select * from cates where id=:id'; //:id 进行参数绑定，提高数据库安全性 //$sql = 'upda... 阅读全文