将信息（整数）添加到php注册表

我正在尝试向我的数据库注册表添加更多字段。我想添加referer，并且已经在数据库中添加了列以及注册表单上的字段。但是，我不知道在连接到数据库register.inc.php的实际表单上要更改什么。如果您有任何想法，我们将不胜感激！ 我已经看到了如何添加字符串，但是每次我尝试添加一个数字时，我都会得到底部的错误

以下是我开始的内容： 这是我尝试过的，但不起作用：

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但每次我尝试添加一个数字时，我都会得到底部的错误。-哪个是？也许如果你正确地检查错误，你会马上发现。-header'Location:../error.php？err=注册失败：插入'；这算不上什么错误。使用我上面给你的，然后回来告诉我们你可能会遇到什么实际错误。@Fred ii-警告：mysqli_stmt:：bind_param:类型定义字符串中的元素数与第行C:\xampp1\htdocs\includes\register.inc.php中的绑定变量数不匹配85@Fred-我明白了！我只需要在bind_参数中添加另一个s

include_once 'db_connect.php';
include_once 'psl-config.php';

$error_msg = "";

if (isset($_POST['username'], $_POST['email'], $_POST['p'])) {
$username = filter_input(INPUT_POST, 'username', FILTER_SANITIZE_STRING);
$email = filter_input(INPUT_POST, 'email', FILTER_SANITIZE_EMAIL);
$email = filter_var($email, FILTER_VALIDATE_EMAIL);
if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
    $error_msg .= '<p class="error">The email address you entered is not valid</p>';
}

$password = filter_input(INPUT_POST, 'p', FILTER_SANITIZE_STRING);
if (strlen($password) != 128) {
    $error_msg .= '<p class="error">Invalid password configuration.</p>';
}


$prep_stmt = "SELECT id FROM members WHERE email = ? LIMIT 1";
$stmt = $mysqli->prepare($prep_stmt);

if ($stmt) {
    $stmt->bind_param('s', $email);
    $stmt->execute();
    $stmt->store_result();

    if ($stmt->num_rows == 1) {
        $error_msg .= '<p class="error">A user with this email address already exists.</p>';
    }
} else {
    $error_msg .= '<p class="error">Database error</p>';
}

if (empty($error_msg)) {
    $random_salt = hash('sha512', uniqid(openssl_random_pseudo_bytes(16), TRUE));

    $password = hash('sha512', $password . $random_salt);

    // Insert the new user into the database 
    if ($insert_stmt = $mysqli->prepare("INSERT INTO members (username, email, password, salt) VALUES (?, ?, ?, ?)")) {
        $insert_stmt->bind_param('ssss', $username, $email, $password, $random_salt);
        // Execute the prepared query.
        if (! $insert_stmt->execute()) {
            header('Location: ../error.php?err=Registration failure: INSERT');
            exit();
        }
    }
    header('Location: ./register_success.php');
    exit();
}
}

<?php

include_once 'db_connect.php';
include_once 'psl-config.php';

$error_msg = "";

if (isset($_POST['username'], $_POST['email'], $_POST['p'])) {
// Sanitize and validate the data passed in
$share = $_POST['share'];
$username = filter_input(INPUT_POST, 'username', FILTER_SANITIZE_STRING);
$email = filter_input(INPUT_POST, 'email', FILTER_SANITIZE_EMAIL);
$email = filter_var($email, FILTER_VALIDATE_EMAIL);
if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
    // Not a valid email
    $error_msg .= '<p class="error">The email address you entered is not valid</p>';
}

$password = filter_input(INPUT_POST, 'p', FILTER_SANITIZE_STRING);
if (strlen($password) != 128) {
    // The hashed pwd should be 128 characters long.
    // If it's not, something really odd has happened
    $error_msg .= '<p class="error">Invalid password configuration.</p>';
}


$prep_stmt = "SELECT id FROM members WHERE email = ? LIMIT 1";
$stmt = $mysqli->prepare($prep_stmt);

if ($stmt) {
    $stmt->bind_param('s', $email);
    $stmt->execute();
    $stmt->store_result();

    if ($stmt->num_rows == 1) {
        // A user with this email address already exists
        $error_msg .= '<p class="error">A user with this email address already exists.</p>';
    }
} else {
    $error_msg .= '<p class="error">Database error</p>';
}

if (empty($error_msg)) {
    // Create a random salt
    $random_salt = hash('sha512', uniqid(openssl_random_pseudo_bytes(16), TRUE));

    // Create salted password 
    $password = hash('sha512', $password . $random_salt);

    if(is_numeric($share)){
        $share = $share;
    }else{
        $share = 0;
    }

    // Insert the new user into the database 
    if ($insert_stmt = $mysqli->prepare("INSERT INTO members (referrer, username, email, password, salt) VALUES (?, ?, ?, ?, ?)")) {
        $insert_stmt->bind_param('ssss', $share, $username, $email, $password, $random_salt);
        // Execute the prepared query.
        if (! $insert_stmt->execute()) {
            header('Location: ../error.php?err=Registration failure: INSERT');
            exit();
        }
    }
    header('Location: ./register_success.php');
    exit();
}
}