注意：未定义的变量：导致在第42行的new_admin.php

-1

我知道我有一个重复的问题，但我已经在谷歌上搜索了很多次，但仍尝试了很多例子，但我仍然无法弄清楚。我知道我的代码不安全，家伙帮我解决了我的代码有什么问题。我试图创建一个注册表。注意：未定义的变量：导致在第42行的new_admin.php

下面的代码：

<?php 
if(isset($_POST['submit'])) { 
    global $con; 

    $firstname = isset($_POST['first_name']) ? $_POST['first_name'] : ''; 
    $lastname = isset($_POST['last_name']) ? $_POST['last_name'] : ''; 
    $email = isset($_POST['email']) ? $_POST['email'] : ''; 
    $username = isset($_POST['username']) ? $_POST['username'] : ''; 
    $password = isset($_POST['password']) ? $_POST['password'] : ''; 
    //$role = isset($_POST['role']) ? $_POST['role'] : ''; 
    //$status = isset($_POST['status']) ? $_POST['status'] : ''; 
    $cpassword = isset($_POST['cpassword']) ? $_POST['cpassword'] : ''; 


    //$login_query=mysqli_query($con, "SELECT * FROM admin where id = $id_session"); 
    //$count=mysqli_num_rows($login_query); 
    //$row=mysqli_fetch_array($login_query); 
    //$type=$row['username']; 

    if($password != $cpassword) { 
     ?> 
      <script type="text/javascript"> 
       alert("Password doesn't match"); 
      </script> 
     <?php 
    } else { 
     $query = "INSERT INTO reg_requests (first_name, last_name, email, username, password) VALUES ('{$firstname}', '{$lastname}', '{$email}', '{$username}', '{$password}')"; 
     $result = mysqli_query($con, $query); 
    } 

    if($result && mysqli_affected_rows($con) == 1) { 
     //mysqli_query($con, "INSERT INTO history (date,action,user) VALUES (NOW(), 'Created Admin: $username', '$type')")or die(mysql_error()); 
     ?> 
     <script type="text/javascript"> 
      alert("Admin creation success, waiting for Admin's approval!"); 
      location.href="adLogin.php"; 
     </script> 
     <?php 
} else { 
    ?> 
     <script type="text/javascript"> 
      alert("Admin creation failed"); 
     </script> 
    <?php 
} 
} 
?> 


<link rel="stylesheet" type="text/css" href="../css/style.css" media="all" /> 

<body class="align"> 

<h1 style="color:seashell; margin-bottom:0px; font-size:44px; font-family:Josefin Slab;">JAIL MANAGEMENT SYSTEM</h1> 
<h2 style="color:seashell; font-family:Josefin Slab;">Registration</h2> 

<div class="grid"> 

    <form method="POST" class="form login"> 

    <div class="form__field"> 
     <label for="login__username"><svg class="icon"><img src="../img/fname.png" width="20" /></svg><span class="hidden">Fname</span></label> 
     <input id="login__username" value="" type="text" name="first_name" class="form__input" placeholder="First Name" required/> 
    </div> 

    <div class="form__field"> 
     <label for="login__username"><svg class="icon"><img src="../img/fname.png" width="20" /></svg><span class="hidden">Lname</span></label> 
     <input id="login__username" value="" type="text" name="last_name" class="form__input" placeholder="Last Name" required/> 
    </div> 

    <div class="form__field"> 
     <label for="login__username"><svg class="icon"><img src="../img/email.png" width="20" /></svg><span class="hidden">Email</span></label> 
     <input id="login__username" value="" type="email" name="email" class="form__input" placeholder="E-mail" required/> 
    </div> 

    <div class="form__field"> 
     <label for="login__username"><svg class="icon"><img src="../img/admin_icon.png" width="20" /></svg><span class="hidden">Username</span></label> 
     <input id="login__username" value="" type="text" name="username" class="form__input" placeholder="Username" required/> 
    </div> 

    <div class="form__field"> 
     <label for="login__username"><svg class="icon"><img src="../img/password.png" width="20" /></svg><span class="hidden">Password</span></label> 
     <input id="login__username" value="" type="password" name="password" class="form__input" placeholder="Password" required/> 
    </div> 


    <div class="form__field"> 
     <label for="login__username"><svg class="icon"><img src="../img/password.png" width="20" /></svg><span class="hidden">Cpassword</span></label> 
     <input id="login__username" value="" type="password" name="cpassword" class="form__input" placeholder="Confirm Password" required/> 
    </div> 

    <div class="form__field"> 
     <input type="submit" name="submit" value="Submit"> 
    </div> 

    </form> 

    <p class="text--center"><a href="adLogin.php">Cancel</a></p> 

</div>

来源

2016-11-25 Cyril

我的错误是在这一行：如果（$结果&& mysqli_affected_rows（$ CON）== 1）{ – Cyril

如果'$密码= $ cpassword'是真实的，'$ result'变量__NOT__存在 –

@ u_mulder兄弟，你是什么意思？我不明白 – Cyril

你$result变量没有条件之前定义。如下所示更改您的代码。

if($password != $cpassword) { 
     $result = FALSE; // If password dosent match define the result as false. 
     ?> 
      <script type="text/javascript"> 
       alert("Password doesn't match"); 
      </script> 
     <?php 
    } else { 
     $query = "INSERT INTO reg_requests (first_name, last_name, email, username, password) VALUES ('{$firstname}', '{$lastname}', '{$email}', '{$username}', '{$password}')"; 
     $result = mysqli_query($con, $query); 
    }

来源

2016-11-25 07:08:52 Tiger

它可以工作！非常感谢！ – Cyril

对不起，我的手机有问题。我不小心点了它 – Cyril

注意：未定义的变量：导致在第42行的new_admin.php

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