有谁知道为什么这个

PHP代码没有更新列imagesit将更新其余的,但只是不是图片列更新用户信息所以电子邮件地址,密码和图片我是PHP的新手,所以我真的不我正在寻找错误时知道要寻找什么

require("common.php");

if(empty($_SESSION['user']))

{

header("Location: login.php");

die("Redirecting to login.php");

}

if(!empty($_POST))

{

if(!filter_var($_POST['email'], FILTER_VALIDATE_EMAIL))

{

die("Invalid E-Mail Address");

}

if($_POST['email'] != $_SESSION['user']['email']['picture'])

{

$query = "

SELECT

1

FROM users

WHERE

email = :email

picture = :picture

";

$query_params = array(

':email' => $_POST['email']

);

try

{

$stmt = $db->prepare($query);

$result = $stmt->execute($query_params);

}

catch(PDOException $ex)

{

die("Failed to run query: " . $ex->getMessage());

}

$row = $stmt->fetch();

if($row)

{

die("This E-Mail address is already in use");

}

}

if(!empty($_POST['password']))

{

$salt = dechex(mt_rand(0, 2147483647)) . dechex(mt_rand(0, 2147483647));

$password = hash('sha256', $_POST['password'] . $salt);

for($round = 0; $round < 65536; $round++)

{

$password = hash('sha256', $password . $salt);

}

}

else

{

$password = null;

$salt = null;

}

$query_params = array(

':email' => $_POST['email'],

':user_id' => $_SESSION['user']['id'],

':picture' => $_POST['picture'],

);

if($password !== null)

{

$query_params[':password'] = $password;

$query_params[':salt'] = $salt;

}

$query = "

UPDATE users

SET

email = :email

picture = :picture

";

if($password !== null)

{

$query .= "

, password = :password

, salt = :salt

";

}

$query .= "

WHERE

id = :user_id

";

try

{

// Execute the query

$stmt = $db->prepare($query);

$result = $stmt->execute($query_params);

}

catch(PDOException $ex)

{

die("Failed to run query: " . $ex->getMessage());

}

$_SESSION['user']['email']['picture'] = $_POST['email'];

header("Location: private.php");

die("Redirecting to private.php");

}

?>