Set user field via form

[Kuubs]

Hello,

How can i set a field of an user with php? I made a form but I cannot seem to actually save the data edited:

Code Select Expand

<?php

$userModel = VmModel::getModel('user');
$userDetails = $userModel->getUser();

$userData = array_keys($userDetails->userInfo);


$userDetails->userInfo[$userData[0]]->imagepath = '/images/virtuemart/'.$form->data['file'];

$userDetails->userInfo[$userData[0]]->first_name = $form->data['name'];


echo "Uploaded logo: <img src='".$userDetails->userInfo[$userData[0]]->imagepath."' 
 style='width:200px; height:auto' /><br />"; // shows the uploaded logo

echo $userDetails->userInfo[$userData[0]]->first_name; //shows the input name


?>

How can I store the data so it gets actually saved in the db?