注意：未定义的索引我无法修复错误可以对此有所帮助

Question

这是我的register.php页，错误在echo $row['firstname'];和echo $row['lastname'];行中，但其他人正常工作

<form action="code.php" method="POST">

            <div class="modal-body">

                <div class="form-group">
                    <label> Username </label>
                    <input type="text" name="username" class="form-control" placeholder="Enter Username">
                </div>
                <div class="form-group">
                    <label> firstname </label>
                    <input type="text" name="firstname" class="form-control" placeholder="Enter firstname">
                </div>
                <div class="form-group">
                    <label> lastname </label>
                    <input type="text" name="lastname" class="form-control" placeholder="Enter lastname">
                </div>
                <div class="form-group">
                    <label>Email</label>
                    <input type="email" name="email" class="form-control" placeholder="Enter Email">
                </div>
                <div class="form-group">
                    <label>Password</label>
                    <input type="password" name="password" class="form-control" placeholder="Enter Password">
                </div>
                <div class="form-group">
                    <label>Confirm Password</label>
                    <input type="password" name="confirmpassword" class="form-control" placeholder="Confirm Password">
                </div>

            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
                <button type="submit" name="registerbtn" class="btn btn-primary">Save</button>
            </div>
          </form>

        </div>
      </div>
    </div>


    <div class="container-fluid">

    <!-- DataTales Example -->
    <div class="card shadow mb-4">
      <div class="card-header py-3">
        <h6 class="m-0 font-weight-bold text-primary">Admin Profile 
                <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#addadminprofile">
                  Add Admin Profile 
                </button>
        </h6>
      </div>

      <div class="card-body">

        <div class="table-responsive">

      <?php
    $connection = mysqli_connect("localhost","root","","opmmusic");
    $query = "SELECT * FROM users";
    $query_run = mysqli_query($connection,$query)
      ?>

          <table class="table table-bordered" id="dataTable" width="100%" cellspacing="0">
            <thead>
              <tr>
                <th> ID </th>
                <th> Username </th>
                <th> Firstname </th>
                <th> lastname </th>
                <th> Email </th>
                <th> Password</th>
                <th> EDIT </th>
                <th> DELETE </th>
              </tr>
            </thead>
            <tbody>
         <?php
          if(mysqli_num_rows($query_run)> 0)
            {
              while($row = mysqli_fetch_assoc($query_run))
              {

                ?>

              <tr>
            <td><?php echo $row['id']; ?></td>
             <td><?php echo $row['username']; ?></td>
              <td><?php echo $row['firstname']; ?></td>
               <td><?php echo $row['lastname']; ?></td>
                <td><?php echo $row['email']; ?></td>
                 <td><?php echo $row['password']; ?></td>


                <td>
                    <form action="" method="post">
                        <input type="hidden" name="edit_id" value="">
                        <button  type="submit" name="edit_btn" class="btn btn-success"> EDIT</button>
                    </form>
                </td>
                <td>
                    <form action="" method="post">
                      <input type="hidden" name="delete_id" value="">
                      <button type="submit" name="delete_btn" class="btn btn-danger"> DELETE</button>
                    </form>
                </td>
              </tr>

               <?php
              }
            }
            else {
              echo "No Record found";
            }
         ?>

            </tbody>
          </table>

        </div>
      </div>
    </div>

    </div>
    <!-- /.container-fluid -->

我的code.php

 <?php

session_start();
$connection = mysqli_connect("localhost","root","","opmmusic");

if(isset($_POST['registerbtn']))
{
    $username = $_POST['username'];
    $firstname = $_POST['firstname'];
    $lastname = $_POST['lastname'];
    $email = $_POST['email'];
    $password = $_POST['password'];
    $confirm_password = $_POST['confirmpassword'];

    if($password === $confirm_password)
    {
        $query = "INSERT INTO users (username,firstname,lastname,email,password) VALUES ('$username','$firstname','$lastname','$email','$password')";
        $query_run = mysqli_query($connection, $query);

        if($query_run)
        {
            echo "done";
            $_SESSION['success'] =  "Admin is Added Successfully";
            header('Location: register.php');
        }
        else 
        {
            echo "not done";
            $_SESSION['status'] =  "Admin is Not Added";
            header('Location: register.php');
        }
    }
    else 
    {
        echo "pass no match";
        $_SESSION['status'] =  "Password and Confirm Password Does not Match";
        header('Location: register.php');
    }

}

?>

Answer 1

我在您的表单上没有看到任何错误。

可能是表单请求尚未设置或定义。

尝试一下。

if (isset($_POST['registerbtn']))
{
    (isset($_POST['username']) ?  $username = $_POST['username'] : $username = '';
    (isset($_POST['firstname']) ? $firstname = $_POST['firstname'] : $firstname = '';
    (isset($_POST['lastname']) ?  $lastname = $_POST['lastname'] : $lastname = '';
    (isset($_POST['email']) ?  $email = $_POST['email'] : $email = '';
    (isset($_POST['password']) ?  $password= $_POST['password'] : $password = '';
    (isset($_POST['confirmpassword']) ?  $confirmpassword = $_POST['confirmpassword'] 
    : $confirmpassword = '';
    //some codes here... 
}