1 <?php 2 //数据库信息 3 $servername = "localhost"; 4 $username = "root"; 5 $password = "****"; 6 $dbname="login"; 7 /* 8 * mysql_select_db('l'); 9 * mysql_query('set names utf8'); 10 */ 11 //打开session 12 session_start(); 13 //判断账号密码是否被赋值 14 if (isset($_POST['user']) && isset($_POST['pass'])) { 15 $user = $_POST['user']; 16 $pass = $_POST['pass']; 17 //建立一个数据库连接 18 $conn = mysql_connect($servername,$username,$password); 19 /* 测试 20 * if($conn) 21 * echo "连接成功"; 22 * else die("连接失败".mysql_error()); 23 */ } 24 //检查是否启动并给出提示 25 if (!$conn) { 26 die("connection failed:" . $conn->connect_error); 27 } 28 //指定一个数据库 29 $db_select=mysql_select_db($dbname,$conn); 30 //验证内容是否与数据库记录吻合 31 $sql_L = "SELECT * FROM l WHERE (username='$user') AND (password='$pass')"; 32 //执行上面的sql语句并赋值给$r 33 $r = mysql_query($sql_L,$conn); 34 //将查到的结果数赋值$result 35 $result = mysql_num_rows($r); 36 //判断是否有对应记录 37 if ($result>0) { 38 echo "<script type='text/javascript'>alert('欢迎')</script>"; 39 } else 40 echo "<script type='text/javascript'>alert('密码错误')</script>"; 41 //关闭数据库连接 42 mysql_close($conn); 43 44 45 46 ?>
PHP-1.连接数据库
猜你喜欢
转载自www.cnblogs.com/xiaoluohao/p/9182549.html
今日推荐
周排行