Question

嗨，大家好，我需要一些帮助。 lm设置用户注册注册表单。但我无法将用户信息插入数据库。并且代码没有显示任何错误消息，这意味着一切都很好。但当我试图注册时，它会给出表单的错误消息＆＃34;无法注册用户＆＃34;。

这是代码:(并在底部检查connect.php代码）

<?php

require_once('connect.php');
//print_r($_POST);
if(isset($_POST) & !empty($_POST)) {
    $username = $_POST['username'];
    $email = $_POST['email'];
    $password = $_POST['password'];

    // storing the sign up info in to the database
    $sql = "INSERT INTO usermanagement (username, email, password) VALUES ('$username', '$email', '$password')";

    //executing the the query
    $result = mysqli_query($connection, $sql);

    if($result){
        echo "User Registered Successfully";
    }
    else{
        echo "Failed to Register User";
    }
}

?> 


    <div id="form-signup">
                    <form id="signup-form" name="sign-up" action="sign.php" method="POST">
                            <h1>Create your profile</h1>
                            <p>
                                <input type="text" name="username" id="username" class="signup-input" required="required" placeholder="Full name*" >
                            </p>

                            <p>
                                <input type="email" name="email" class="signup-input" required="required" placeholder="Email*" >
                            </p>
                            <p>
                                <input type="password" name="password" class="signup-input" required="required" placeholder="Mot de passe*">
                            </p>
                            <!-- <p>
                                <input type="password" name="confirmpassword" class="signup-input" required="required" placeholder="Confirmez mot de passe*">
                            </p> -->
                            <p class="agree"> By signing up, you agree to Tout-Passe's <br><a href="condition.php"> Terms of use</a><br> and <a href="politic.php">Privacy Policy</a>.
                            </p>
                            <p>
                                <input type="submit" class="signup-btn" name="btn-signup" value="Create Account">
                            </p>
                            <p class="already">Already on Tout-Passe? <a href="log.php"> Log in</a></p>
                        </div><!--END OF PHASE-1-->
                    </form> <!--END OF SIGN-UP-->
                </div><!--END FO ALLFORM-->

连接代码

<?php 
$connection = mysqli_connect('localhost', 'root', '');
if(!$connection){
    die("Database Connection Failed" . mysqli_error($connection));
}
$select_db = mysqli_select_db($connection, 'listing');//listing = database
if(!$select_db){
    die("Failed to select database" . mysqli_error($connection));
}

?>

Answer 1

你做错了第4行，if(isset($_POST) & !empty($_POST)) {你只有一个&你应该有两个这样的：if(isset($_POST) && !empty($_POST)) {

除此之外，当你的消息告诉你它没有注册用户时，它没有解释为什么，为了解决这个问题，你必须添加一个像这样的mysqli_error（）：

require_once('connect.php');
//print_r($_POST);
if(isset($_POST) && !empty($_POST)) {
    $username = $_POST['username'];
    $email = $_POST['email'];
    $password = $_POST['password'];

    // storing the sign up info in to the database
    $sql = "INSERT INTO usermanagement (username, email, password) VALUES ('$username', '$email', '$password')";

    //executing the the query
    $result = mysqli_query($connection, $sql);

    if($result){
        echo "User Registered Successfully";
    }
    else{
        echo "Failed to Register User, reason: " . mysqli_error($connection);
    }
}

您的代码也存在两个问题：

SQL注入是faillibe。 What is SQL injection?
您应该测试每个全局变量是否单独设置为：if(isset($_POST['username']) && !empty($_POST['username']))而不是这样：if(isset($_POST) && !empty($_POST))

将用户信息插入到databasa php和mysql中

1 个答案: