数据库未更新-php PDO
我正在使用以下代码更新数据库中的密码和salt字段:数据库未更新-php PDO,php,mysql,database,pdo,Php,Mysql,Database,Pdo,我正在使用以下代码更新数据库中的密码和salt字段: // First we execute our common code to connection to the database and start the session require("common.php"); $id = $_GET[id]; // This if statement checks to determine whether the registration form has been submitted
// First we execute our common code to connection to the database and start the session
require("common.php");
$id = $_GET[id];
// This if statement checks to determine whether the registration form has been submitted
// If it has, then the registration code is run, otherwise the form is displayed
if(!empty($_POST))
{
// Ensure that the user has entered a non-empty password
if(empty($_POST['password']))
{
die("Please enter a password.");
}
// Ensure that the user has entered a non-empty username
if(empty($_POST['confirmpassword']))
{
// Note that die() is generally a terrible way of handling user errors
// like this. It is much better to display the error with the form
// and allow the user to correct their mistake. However, that is an
// exercise for you to implement yourself.
die("Please confirm your password.");
}
if ($_POST["password"] == $_POST["confirmpassword"]) {
// An INSERT query is used to add new rows to a database table.
// Again, we are using special tokens (technically called parameters) to
// protect against SQL injection attacks.
$query = "UPDATE Staff SET password=:password, salt=:salt WHERE id=:id";
// A salt is randomly generated here to protect again brute force attacks
// and rainbow table attacks. The following statement generates a hex
// representation of an 8 byte salt. Representing this in hex provides
// no additional security, but makes it easier for humans to read.
$salt = dechex(mt_rand(0, 2147483647)) . dechex(mt_rand(0, 2147483647));
// This hashes the password with the salt so that it can be stored securely
// in your database. The output of this next statement is a 64 byte hex
// string representing the 32 byte sha256 hash of the password. The original
// password cannot be recovered from the hash.
$password = hash('sha256', $_POST['password'] . $salt);
// Next we hash the hash value 65536 more times. The purpose of this is to
// protect against brute force attacks. Now an attacker must compute the hash 65537
// times for each guess they make against a password, whereas if the password
// were hashed only once the attacker would have been able to make 65537 different
// guesses in the same amount of time instead of only one.
for($round = 0; $round < 65536; $round++)
{
$password = hash('sha256', $password . $salt);
}
try
{
// Execute the query to create the user
$stmt = $db->prepare($query);
$stmt->execute(array(
':password' => $password,
':salt' => $salt,
':id' => $id));
}
catch(PDOException $ex)
{
// Note: On a production website, you should not output $ex->getMessage().
// It may provide an attacker with helpful information about your code.
die("Failed to run query: " . $ex->getMessage());
}
// This redirects the user back to the login page after they register
header("Location: login.php");
}
die("Passwords do not match.");
}
//首先,我们执行我们的公共代码来连接数据库并启动会话
要求(“common.php”);
$id=$\u获取[id];
//此if语句检查以确定是否已提交注册表
//如果有,则运行注册码,否则显示表单
如果(!空($\u POST))
{
//确保用户输入了非空密码
if(空($_POST['password']))
{
死亡(“请输入密码”);
}
//确保用户输入了非空用户名
if(空($\u POST['confirmpassword']))
{
//请注意,die()通常是处理用户错误的糟糕方法
//像这样。用表单显示错误要好得多
//并允许用户纠正错误
//锻炼身体,让你实现自我。
死亡(“请确认您的密码”);
}
如果($\u POST[“密码”]==$\u POST[“确认密码”]){
//插入查询用于向数据库表中添加新行。
//同样,我们使用特殊标记(技术上称为参数)来
//防止SQL注入攻击。
$query=“updatestaff SET password=:password,salt=:salt,其中id=:id”;
//这里随机生成一个salt来再次保护暴力攻击
//和彩虹表攻击。下面的语句生成一个十六进制
//表示8字节的salt。用十六进制表示它提供
//没有额外的安全性,但让人更容易阅读。
$salt=dechex(兰特02147483647))。dechex(兰特02147483647));
//这会将密码与salt散列,以便可以安全地存储密码
//下一条语句的输出是64字节十六进制
//表示密码的32字节sha256哈希的字符串。原始
//无法从哈希中恢复密码。
$password=hash('sha256',$\u POST['password'].$salt);
//接下来我们对散列值65536进行多次散列
//防止暴力攻击。现在攻击者必须计算哈希65537
//他们根据密码进行的每次猜测的次数,而如果
//如果只进行一次哈希运算,攻击者将能够使65537不同
//猜测的时间相同,而不是只有一次。
对于($round=0;$round<65536;$round++)
{
$password=hash('sha256',$password.$salt);
}
尝试
{
//执行查询以创建用户
$stmt=$db->prepare($query);
$stmt->execute(数组)(
':password'=>$password,
“:salt”=>$salt,
':id'=>$id));
}
捕获(PDO异常$ex)
{
//注意:在生产网站上,不应输出$ex->getMessage()。
//它可能会向攻击者提供有关代码的有用信息。
die(“无法运行查询:”..ex->getMessage());
}
//这会在用户注册后将其重定向回登录页面
标题(“Location:login.php”);
}
死亡(“密码不匹配”);
}
数据库中有一个“id”字段,id等于1的员工(上一页上的链接将id传递到此页,在本例中,id将为1)。我不知道为什么它没有更新数据库。我是php新手,希望能得到任何帮助
谢谢,
Joe语法不正确,您想使用以下方法调用
$id
:
$id = $_GET['id'];
我认为当您执行
execute(array)blah
时,它会将所有变量视为字符串,所以请使用
您收到的错误消息是什么?
$id=$\u GET[id]
应该是$id=$\u GET['id']
请使用真正的密码散列算法,如PHP的password\u hash()
function提供的算法sha256
不适用于密码散列。这是在bcyrpt/PBKDF/类似项目上的一次犹太人区尝试,远远达不到这两个目标。我知道这有点老套,但这只是一次测试。没有错误,只是没有更新我已经更新了代码,但仍然没有更新数据库。谢谢,不是吗代码>?嘎!是的,如果我不把自己的答案弄错的话,会有帮助的!这只会触发有关未定义常数的E_通知
level错误(OP可能通过其error_报告
level抑制该错误)。PHP仍然会将id
转换为'id'
,因此我高度怀疑这是问题所在。这并不能解决问题,还有其他想法吗?
$stmt ->bindParam(':password', $password, PDO::PARAM_STR)
$stmt ->bindParam(':salt', $salt, PDO::PARAM_STR)
$stmt ->bindParam(':id', $id, PDO::PARAM_INT)
$stmt ->execute();