问无法在PHP中验证密码

EN

  $option = ['cost' => 12];
  $password = password_hash($_currentpassword, PASSWORD_BCRYPT, $option);

  $selectpasswordsql = "SELECT `password` FROM `auth` WHERE username=?";
  $selectpasswordstmt = $conn->prepare($selectpasswordsql);
  $selectpasswordstmt->execute(array($_SESSION['account']['username']));
  $selectpasswordresults = $selectpasswordstmt->fetch(PDO::FETCH_ASSOC);

  $databasepass = $selectpasswordresults['password'];
  $databasepass = trim($databasepass);
  if(password_verify($password,$databasepass)){
    if(empty($passmsgs)){
      $updatepasssql = "UPDATE `auth` SET
        `password`=?
      WHERE username=?
      ";
      $updatepassstmt = $conn->prepare($updatepasssql);
      $updatepassstmt->execute(array($password, $_SESSION['account']['username']));
      if($updatepassstmt){
        array_push($passmsgs, 'Successfully updating your password!');
      } else {
        array_push($passmsgs, 'There was a problem executing your command!');
      }
    }
  } else {
    array_push($passmsgs, 'Your current password is wrong!');
  }