Reset password don't work when login php

Question

I'm stuck with resetting password in php. I'm using password_hash for register, password_verify for login, everything seemed to work until I had the idea to implement the reset password thing. My plan was to have of course 3 fields:oldPassword, newPassword,confirmNewPassword.

First I check if the oldPassword is in db, if yes than after checking if the 2 new passwords are correct to update in db the newPassword. The problem is that I can update in my db the new hashed password but when I login again it can't recognize the password and can't log in. And I really can't understand why.

Here's my code:

For register (maybe it's useless but anyway)

if ($_POST['actiune'] == 'register') {
    $firstname = $_POST['firstName'];
    $lastname = $_POST['lastName'];
    $email = $_POST['email'];
    $_SESSION['username'] = $email;
    $password = $_POST['password'];
    $hash = password_hash($password, PASSWORD_BCRYPT);
    $age = $_POST['age'];
    $address = $_POST['address'];

    if(addUser($firstname, $lastname, $email, $hash, $age, $address)) {
        header("Location: index.php?page=profile");
    }
    else
        die("User didnt add in db.");
}

login:

if($_POST['actiune'] == 'login') {
    $email = $_POST['email'];
    $password = $_POST['password'];
    $pass = getPassword($email);

    $verify = password_verify($password, $pass);
    if ($verify) {
        $_SESSION['username'] = $email;
        header("Location: index.php?page=profile");
    } else {
        header("Location: index.php?page=login&msg=PleaseRegister");
        die();
    }
}

resetPassword:

if($_POST['actiune'] == 'resetPassword') {
    $oldPassword = $_POST['oldPassword'];
    $newPassword = $_POST['newPassword'];
    $confirmPassword = $_POST["confirmPassword"];

    $passwordDb = getPassword($_SESSION['username']);
    $verify = password_verify($oldPassword, $passwordDb);
    if($verify) {
        setPassword($newPassword, $_SESSION['username']);
        header("location: index.php?page=profile");
    }
}

function setPassword

function setPassword($password, $email) {
    include("connectionFile.php");

    $hash = password_hash($password, PASSWORD_BCRYPT); 
    try {
        $sql = $conn->prepare("update user set password = '$hash' where email='$email'");
        $sql->execute();
    } catch(Exception $e) {
        echo $e->getMessage();
        return false;
    }
    return true;
}

getPassword function used for login:

function getPassword($email) {
    include("connectionFile.php");

    $sql = $conn->prepare("select * from user where email='$email'");
    $sql->execute();
    $result = $sql;
    foreach($result as $row) {
        $pass= $row['password'];
    }
    return $pass;
}

Answer 1

As I wrote in comments:

setPassword($newPassword, $_SESSION['username']

You're using the wrong variable in:

function setPassword($password, $email)

...

password_hash($password,

The variable should have been $newPassword and not $password.

Your code failed on your silently since password_hash() did do its job, it just didn't hash the said/wanted variable.

This, and along with my other comments about your being open to an SQL injection.