Answered Paid members in Modx

1. Members can signup and login
2. Members can make a payment
3. Members can view paid videos

1. Login extra for handling all the member stuff
2. I'd have to work with iDeal(Dutch) so I thought of Mollie API?
3. Once the payment is successful I store the expiration date of the membership in an extended field on the member. For the video I use a snippet which checks if the user has a valid membership or not.

You might consider using the User Profile's DOB (date of birth) field for the expiration date if you're not already using it. It would be faster and easier than an extended field.

Even faster, would be to use the remote_key field of the modUser object. It's a string field, so you could store either a human-readable date or a unix timestamp there. Since $modx->user is always available for logged-in users, this would get it in your snippet:

$expDate = $modx->user->get('remote_key');

if (!$modx->user->isAuthenticated('web')) {
$startdate = "16-May-2016";
$expire = strtotime($startdate. ' + 2 days');
$today = strtotime("today midnight");

 if($today >= $expire){
  // Show message: Membership not valid
 }else {
  // Show video
}
}else {
 // Show messge: login
}

It looks good to me, though you might want to add another section for when it's close to running out, warning the user that their subscription will lapse in x days and suggesting that they "click here" to re-up.

You might consider using the User Profile's DOB (date of birth) field for the expiration date if you're not already using it. It would be faster and easier than an extended field.

Even faster, would be to use the remote_key field of the modUser object. It's a string field, so you could store either a human-readable date or a unix timestamp there. Since $modx->user is always available for logged-in users, this would get it in your snippet:

$expDate = $modx->user->get('remote_key');

$expDate = $modx->user->set('remote_key', '10-10-2016');