如何从我的数据库中获取注册消息

Question

我正在设置完全有组织的注册表单，我正在尝试将信息发送到我的 MySQL 数据库服务器中。我的代码不起作用，无法弄清楚弹出消息您已注册！我尝试了几个选项，但没有一个在服务器上工作，<?phpif (array_key_exists('email', $_POST) or array_key_exists('password', $_POST)) {    // So I'm guessing here need to some additions of based my own inclinatios.我的代码<?php    if (array_key_exists('email', $_POST) or array_key_exists('password', $_POST)) {        $link = mysqli_connect("localhost", "id8955440_bigebro", "sunshine1987**", "id8955440_bigebro");        if (mysqli_connect_error()) {            die("There was an error connecting to the database");        }        if ($_POST['email'] == '') {            echo "<p>Email address is required.</p>";        } else if ($_POST['password'] == '') {            echo "<p>Password is required.</p>";        } else {            $query = "SELECT `id` FROM `bigebro` WHERE email = '" . mysqli_real_escape_string($link, $_POST['email']) . "'";            $result = mysqli_query($link, $query);            if (mysqli_num_rows($result) > 0) {                echo "<p>That email address has already been taken.</p>";            } else {                $query = "INSERT INTO `bigebro` (`email`, `password`) VALUES ('" . mysqli_real_escape_string($link, $_POST['email']) . "', '" . mysqli_real_escape_string($link, $_POST['password']) . "')";                if (mysqli_query($link, $query)) {                    echo "<p>You have been signed up!";                } else {                    echo "<p>There was a problem signing you up - please try again later.</p>";                }            }    }}?>HTML<form method="post">    <input name="email" type="text" placeholder="Email address">    <input name="password" type="password" placeholder="Password">    <input type="submit" value="Sign up"></form>$link = mysqli_connect("localhost", "id8955440_bigebro", "sunshine1987**", "id8955440_bigebro");当我注册表格时只弹出“注册您时出现问题 - 请稍后再试”我希望从结果中得到“您已注册”。请看报名表

Answer 1

使用mysqli_error查询跟踪误差。

$query = "INSERT INTO `bigebro` (`email`, `password`) VALUES ('" . mysqli_real_escape_string($link, $_POST['email']) . "', '" . mysqli_real_escape_string($link, $_POST['password']) . "')";

            if (mysqli_query($link, $query)) {

                echo "<p>You have been signed up!";

            } else {

                echo "Error: " . mysqli_error($conn);

            }

还要检查你的数据库结构，比如 id 应该自动递增，电子邮件和密码应该是 varchar。