<?php
header("Content-Type:text/html;charset=utf8");
$username = $_GET["username"]; //獲取輸入用戶名
$password = $_GET["password"]; //獲取輸入密碼
$mysql_server_name = "localhost:3306"; //連接數據庫端口
$mysql_username = "root"; //用戶名
$mysql_password = "123456"; //密碼
$mysql_database = "test"; //數據庫名稱
$conn = new mysqli($mysql_server_name, $mysql_username, $mysql_password, $mysql_database); //構造函數mysql
$sql = $conn->query("select username from user where username ='{$username}' and password = '{$password}'"); //查詢數據庫中的用戶名和密碼 並返回集合
$row = mysqli_fetch_assoc($sql); //取其中一行
if ($row > 0) { //判斷是否存在
echo "歡迎'{$username}'再次登錄";
} else {
echo "，您還沒有賬號，請先進行注冊！！！";
header("location:register.html"); //跳轉至注冊頁面
}
?>