我似乎无法使 password_verify() 工作

Question

I hash password before it is store into DB. When I want to get it back and compare with user input I always get "password does not match". I tried a lot of fixes but nothing seems to work. May be the problem is with my syntax, I am not good with php.

if (mysqli_num_rows($result) > 0) {
    // output data of each row
    
    while($row = mysqli_fetch_assoc($result)) {
    if (password_verify($RegisteredPass, $row['pass']))
       {
           echo "tchd";
           echo "ID:".$row['id'] ."|Name:".$row['name']. "|User:".$row['user'];
           }
       else{
           echo "pass doesn`t match";
           
       }
    }
} else {
   
    echo "user not found";
}

Hashing password

$hassedPassword = password_hash($password, PASSWORD_DEFAULT, ['cost' => 12]);

I am not very concern about security, because it is just for a project. I just need to make it work.

Edit

I changed while loop as was in "duplicate", but it still does not work. Any ideas why?

$sql = "SELECT pass, id, name, user FROM unityTut WHERE user='".$RegisterUser."'";

 $result = $conn->query($sql);
        if ($result->num_rows === 1) {
            $row = $result->fetch_array(MYSQLI_ASSOC);
            if (password_verify($RegisteredPass, $row['pass'])) {

                //Password matches, so create the session
                 
                

echo "Match";

            }else{
                echo  "The username or password do not match";
            }

Answer 1

So it works now!

Code for login:

$sql = "SELECT pass, id, name, user FROM unityTut WHERE user='".$RegisterUser."'";
$result = $conn->query($sql);
if ($result->num_rows === 1) {
    $row = $result->fetch_array(MYSQLI_ASSOC);
    if (password_verify($RegisteredPass, $row['pass'])) {
        echo "Match";
    }else{
        echo  "The username or password do not match";
    }
// ...

VARCHAR(255) Seems to do the trick, but I had to delete all records and register new user. That seems to do the trick too.