PHP保持插入刷新

Question

我目前正在为我的应用程序注册，直到我遇到这个问题，每当我进入我的页面时，它会在我的users表中创建一个新行。看来，当我重新加载页面时，表单会自动提交。我曾提到this问题：

使用header（“location：”）;插入完成后，将显示新的表单，刷新不应导致再次提交。

但是，当我这样做的时候发生的一切都是一个大的重定向循环，阻止我一起访问页面。

这里是我的代码为我登记：

<?php 

    global $conn; 
    global $register; 
    global $error; 

    $username = $_POST['username']; 
    $firstName = $_POST['firstName']; 
    $lastName = $_POST['lastName']; 
    $email = $_POST['email']; 
    $phone = $_POST['phone']; 
    $password = $_POST['password']; 
    $confirmPassword = $_POST['confirmPassword']; 

    define(HEADER_TITLE, "Register"); 
    include_once 'template/header.php'; 

    if (isset($_POST['register'])) { 
     $register->register($username, $firstName, $lastName, $email, $phone, $password, $confirmPassword); 
    } 

?> 
<div class="container"> 
    <div id="hoogley_login"> 
     <h2>Register</h2><hr> 
      <div class="alert alert-danger" role="alert"> 
      <?php 
      if ($error->display() != null) { 
       #echo '<div class="alert alert-danger" role="alert">'; 
       $error->display(); 
      } else { 
       #echo '<div>'; 
      } 
     ?> 
     </div> 
     <form action="register" method="post"> 
      <input type="text" class="form-control" name="firstName" placeholder="First Name" value="<?php echo $_GET['firstName']; ?>"> 
      <br> 
      <input type="text" class="form-control" name="lastName" placeholder="Last Name" value="<?php echo $_GET['lastName']; ?>"> 
      <br> 
      <input type="text" class="form-control" name="username" placeholder="Username" value="<?php echo $_GET['username']; ?>"> 
      <br> 
      <input type="email" class="form-control" name="email" placeholder="E-Mail Address" value="<?php echo $_GET['email']; ?>"> 
      <br> 
      <input type="tel" class="form-control" name="phone" placeholder="Phone Number" value="<?php echo $_GET['phone']; ?>"> 
      <br> 
      <input type="password" class="form-control" name="password" placeholder="Password"> 
      <br> 
      <input type="password" class="form-control" name="confirmPassword" placeholder="Confirm Password"> 
      <br> 
      <input type="submit" class="btn btn-info btn-lg" name="register" value="Register!"> 
      <br><br> 
      <a href="/login">Have an account? Login!</a> 
     </form> 
    </div> 
</div> 



<?php include_once 'template/footer.php'; ?> 

我register.class.php：

<?php 


/** 
* User Registration 
*/ 
class register { 

public function register($reg_username = '', $reg_firstName = '', $reg_lastName = '', $reg_email = '', $reg_phone = '', $reg_password = '', $reg_confirmPassword = '') { 

    global $conn; 
    global $error; 

    // TO PREVENT AN UNDEFINED INDEX 
    // First Name 
    if(isset($reg_firstName)) { 
     $reg_firstName = stripslashes(htmlspecialchars($conn->real_escape_string($reg_firstName))); 
    } else { 
     $error->set('312'); 
    } 

    // Last Name 
    if(isset($reg_lastName)) { 
     $reg_lastName = stripslashes(htmlspecialchars($conn->real_escape_string($reg_lastName))); 
    } else { 
     $error->set('313'); 
    } 

    // Username 
    if(isset($reg_username)) { 
     $reg_username = stripslashes(preg_replace('/\s+/', '', htmlspecialchars($conn->real_escape_string($reg_username)))); 
    } else { 
     $error->set('311'); 
    } 

    // Email 
    if(isset($reg_email)) { 
     $reg_email = stripslashes(preg_replace('/\s+/', '', htmlspecialchars($conn->real_escape_string($reg_email)))); 
    } else { 
     $error->set('314'); 
    } 

    // Phone 
    if(isset($reg_phone)) { 
     $reg_phone = stripslashes(preg_replace("/[^0-9]/", "", htmlspecialchars($conn->real_escape_string($reg_phone)))); 
    } else { 
     $error->set('315'); 
    } 

    // Password 
    if(isset($reg_password)) { 
     $reg_password = stripslashes(htmlspecialchars($conn->real_escape_string($reg_password))); 
    } else { 
     $error->set('316'); 
    } 

    // Password 
    if(isset($reg_confirmPassword)) { 
     $reg_password = stripslashes(htmlspecialchars($conn->real_escape_string($reg_confirmPassword))); 
    } else { 
     $error->set('317'); 
    } 

    // Check if username exists in the database 
    $stmt = $conn->prepare("SELECT * FROM users WHERE username=?"); 
    $stmt->bind_param('s', $reg_username); 
    $stmt->execute(); 
    $stmt->store_result(); 

    if ($stmt->num_rows == 0) { 

     $stmt = $conn->prepare("SELECT * FROM users WHERE email=?"); 
     $stmt->bind_param('s', $reg_email); 
     $stmt->execute(); 
     $stmt->store_result(); 

     if ($stmt->num_rows == 0) { 

      $stmt = $conn->prepare("SELECT * FROM users WHERE phone=?"); 
      $stmt->bind_param('s', $reg_phone); 
      $stmt->execute(); 
      $stmt->store_result(); 

      if ($stmt->num_rows == 0) { 

       // Do passwords match? 
       if ($reg_password == $reg_confirmPassword) { 

        $reg_passwordEncrypt = hash("sha256", $reg_password); 

        // Insert data 
        $stmt = $conn->prepare("INSERT INTO users (username, firstName, lastName, email, phone, password, company, website, bio) VALUES (?, ?, ?, ?, ?, ?, '', '', '')"); 
        $stmt->bind_param("ssssss", $reg_username, $reg_firstName, $reg_lastName, $reg_email, $reg_phone, $reg_passwordEncrypt); 
        $stmt->execute(); 
        header("Location: /login"); 

       } else { 
        // Set Error 
        $error->set('308'); 
       } 

      } else { 
       // Set Error 
       $error->set('306'); 
      } 

     } else { 
      // Set Error 
      $error->set('304'); 
     } 
    } else { 
     // Set Error 
     $error->set('301'); 

    } 


} 

} 

$register = new register; 

谢谢！

Answer 1

这是因为您的方法与类名相同。它以PHP 4构造函数的形式工作，并在初始化对象时调用该方法。

https://wiki.php.net/rfc/remove_php4_constructors