php include_once讓我的代碼停止運行

Question

我有一個簡單的html表單，用於將POST字段中的信息發送到文件register.php。在register.php中，回聲成功執行只是爲了顯示文件已被輸入。下一行使用include_once來包含一個名爲UserManagement.php的文件，其中包含一個具有相同名稱的類。然後嘗試實例化此類，以便可以訪問它的方法，但程序流似乎永遠不會超過register.php中的第一個echo語句。 我希望有更有經驗的人會直接發現菜鳥的錯誤。我花了很長時間研究問題是什麼，我似乎無法得到它。

我2個PHP文件和我的HTML表單低於：

<form action="register.php" method="POST"> 
 
    Username: <input type="text" name="uname" /><br /> 
 
    FirstName: <input type="text" name="fname" /><br /> 
 
    Last Name: <input type="text" name="lname" /><br /> 
 
    Date of Birth: <input type="date" name="dob" /><br /> 
 
    Telephone: <input type="mob" name="tel" /><br /> 
 
    Email: <input type="email" name="email1" /><br /> 
 
    Confirm Email: <input type="email" name="email2" /><br /> 
 
    Password: <input type="password" name="pass1" /><br /> 
 
    Confirm Password: <input type="password" name ="pass2" /><br /> 
 
    <input type="submit" value="Register" name="sub" /> 
 
    
 
    <br/><A HREF="login.php">Already Registered? Login Here</A><br/> 
 
</form>

register.php

<?php 
echo "entered register.php"; 
require_once('UserManagement.php'); 
echo "userman was included"; 
$um = new UserManagement(); 
echo "usermanagement object created"; 
$response = array("error" => FALSE); 
//check that all fields were populated by the http POST. 
echo "about to check if fields are all populsted"; 

if(isset($_POST['uname']) && 
    isset($_POST['fname']) && 
    isset($_POST['lname']) && 
    isset($_POST['tel']) && 
    isset($_POST['dob']) && 
    isset($_POST['email1']) && 
    isset($_POST['email2']) && 
    isset($_POST['pass1']) && 
    isset($_POST['pass2'])) { 

    echo "all fields were populated"; 
    //take values from http POST 
    $uname = $_POST['uname']; 
    $fname = $_POST['fname']; 
    $lname = $_POST['lname']; 
    $tel = $_POST['tel']; 
    $dob = $_POST['dob']; 
    $email1 = $_POST['email1']; 
    $email2 = $_POST['email2']; 
    $pass1 = $_POST['pass1']; 
    $pass2 = $_POST['pass2']; 
    $um->registerUser($uname,$fname,$lname,$tel,$dob,$email1,$pass1); 
} 
else { 
    echo "not all fields were populated"; 
} 
?> 

UserManagement.php

<?php 
require_once('DB_Connect.php'); 
//Contains functions for all user management related isues i.e. add, remove, edit user. 
//only user management - essentially CRM. 
class UserManagement 
{ 
    echo "entered user management class"; 
    private $conn; 

    function __construct() 
    { 
     echo "user management constructo end"; 

     $db = new DB_Connect(); 
     $this->conn = $db->connect(); 
     echo "user management constructo end"; 
    } 

    function __destruct() 
    { 
     //TODO 
    } 

    function registerUser($username,$firstname,$lastname,$telephone,$dob,$email,$password) 
    { 
     echo "you chose to register a new user."; 
     $uuid = uniqid('', true); 
     $hash = $this->hashSSHA($password); 
     $encrypted_password = $hash["encrypted"]; // encrypted password 
     $salt = $hash["salt"]; // salt 

     $sql = "INSERT INTO User(`id`,`username`,`first_name`,`last_name`,`telephone`,`email`,`password`) VALUES (NULL,?,?,?,?,?,?)"; 
     $stmt = $this->conn->prepare($sql); 
     $stmt->bind_param('ssssss',$username,$firstname,$lastname,$telephone,$email,$encrypted_password); 
     $result = $stmt->execute(); 

     echo "user added"; 
     echo $result; 
     $stmt->close(); 
    } 

    function unregisterUser($uname,$pass1,$pass2) 
    { 
     echo "you chose to deregister a user."; 
    } 

    public function hashSSHA($password) 
    { 

     $salt = sha1(rand()); 
     $salt = substr($salt, 0, 10); 
     $encrypted = base64_encode(sha1($password . $salt, true) . $salt); 
     $hash = array("salt" => $salt, "encrypted" => $encrypted); 
     return $hash; 
    } 

    public function checkhashSSHA($salt, $password) 
    { 
      $hash = base64_encode(sha1($password . $salt, true) . $salt); 
      return $hash; 
    }  
} 

？0

>

DB_Connect.php

<?php 
class DB_Connect { 
    private $conn; 
    // Connecting to database 
    public function connect() { 
     // Connecting to mysql database 
     require_once('Config.php'); 
     $this->conn = new mysqli(DB_HOST, DB_USER, DB_PASSWORD, DB_DATABASE); 
     // return database handler 
     return $this->conn; 
      } 
} 

>

Answer 1

你的問題是類定義的echo線：

... 
class UserManagement 
{ 
    echo "entered user management class"; 
    private $conn; 
... 

類定義子句不能用於執行代碼，因爲它違反了OOP原則。