用户身份验证 PHP mySQL 无效

Question

所以我目前正在 Xampp 中使用 php 和 mysql 构建用户身份验证系统。

我已经设法让它通过电子邮件地址识别用户是否存在，但其他功能似乎不起作用。例如，检查用户是否激活了他们的帐户，因为即使我在数据库中将他们的活动状态更改为 1，他们也没有。或者用登录功能即使邮箱和密码都正确它也会说不正确。

这是我的 login.php 脚本

    <?php
include 'init.php';


function sanitize($data){
    return mysql_real_escape_string($data);
}

//check if user exists
function user_exists($email){
        $email = sanitize($email);
        //$query = mysql_query("SELECT COUNT('ID') FROM 'register' WHERE 'email' = '$email'");
        return (mysql_result(mysql_query("SELECT COUNT(ID) FROM register WHERE email = '$email'"),0) == 1)? true : false;
}

//check if user has activated account
function user_activate($email){
        $email = sanitize($email);
        //$query = mysql_query("SELECT COUNT('ID') FROM 'register' WHERE 'email' = '$email'");
        return (mysql_result(mysql_query("SELECT COUNT(ID) FROM register WHERE email = '$email' AND 'active' =1"),0) == 1)? true : false;
}
function user_id_from_email($email){
    $email = sanitize($email);
    return (mysql_result(mysql_query("SELECT id FROM register WHERE email = '$email'"),0,'id'));
}
function login($email,$password){
    $user_id = user_id_from_email($email);
    $email = sanitize($email);
    $password = md5($password);

    return (mysql_result(mysql_query("SELECT COUNT(id) FROM register WHERE email = '$email' AND 'password' ='$password'"),0) == 1)? $user_id : false;
}


if(empty($_POST)=== false){
    $email = $_POST['email'];   
    $password = $_POST['password'];
}

if(empty($email)|| empty($password) === true){
        $errors[] = "You must enter a username and a password"; 
}
else if(user_exists($email) === false){
    $errors[] = "Email address is not registered";  
}
else if(user_activate($email) === false){
    $errors[] = "You haven't activated your account yet";   
}
else{
    $login = login($email, $password);
    if($login === false){
        $errors[] = "email/password are incorrect";
    } else {
        echo "ok";
    }
}

print_r($errors);


/*$email = $_POST['email'];
$password = $_POST['password'];


if($email&&$password){
    $connect = mysql_connect("localhost","root","") or die ("Couldn't Connect");
    mysql_select_db("users") or die("Couldn't find Database");
}
    else 
        die("Please enter a username and a password");

$query = mysql_query("SELECT * FROM register WHERE email = '$email'");
$numrows = mysql_num_rows($query);

echo $numrows;*/


?>

我的数据库名为 'users'，目前只有 1 个 table 名为 'register'。随着行：id, firstname, lastname, email, password, and active.

Answer 1

在您的函数登录中，尝试删除字段名称密码两边的引号。或者更喜欢使用这个 ` .

请注意，您使用的函数 mysql_result 和 mysql_query 在 PHP 7.0

中不再受支持

如您所见： http://php.net/manual/en/function.mysql-query.php http://php.net/manual/en/function.mysql-result.php

用户身份验证 PHP mySQL 无效

User authentication PHP mySQL not working

php

mysql

authentication

xampp