Initial commit

20241208/register.php

@@ -0,0 +1,51 @@
+<meta charset="utf-8">
+<?php
+require_once("db_config.php");
+if(isset($_POST['ok'])){
+    $name = $_POST['name'];
+    $password_1 = $_POST['password'];
+    //服务器端数据验证
+    $valid = true;
+    if($name == ""){
+        echo "姓名不能为空<br>";
+        $valid = false;
+    }
+    //判断姓名是否重复
+    $queryString = "select count(name) as counter from user_70 where name = '$name'";
+    $rs = mysqli_query($link,$queryString);
+    $row = mysqli_fetch_assoc($rs);
+    if($row['counter'] != 0){
+//        echo "用户". $name."已存在，请换名<br>";
+        $userExist = true;
+    }else{
+        $userExist = false;
+    }
+
+    if($valid && !$userExist){
+        //对密码加密
+        $password_1 = md5($password_1);
+        //如果验证通过，把注册信息写入表中
+        $queryString = "insert into user_70(name,password) values('$name','$password_1') ";
+        mysqli_query($link,$queryString);
+        echo "恭喜，注册成功!";
+    }
+    if($valid && $userExist){
+        $password_1 = md5($password_1);
+        $queryString = "update user_70 set password = '$password_1' where name = '$name'";
+        mysqli_query($link,$queryString);
+        echo "密码更新成功";
+    }
+
+
+}else{
+    $name = "";
+}
+?>
+<form action="" method="post">
+    姓名：<input type="text" id="name" name="name" value="<?php echo $name;?>"><br>
+    密码：<input type="password" id="password" name="password" value=""><br>
+    <input type="submit" id="ok" name="ok" value="ok">
+</form>
+<script>
+    //同学们自行完成浏览器数据验证
+</script>