.edu registration only

Well, it’s a php file, so you need it to start with this:
<?php

Put that on the very top line (that’s important), then hit Enter, then put the code I gave you. Then save.

I had just assumed you had the file already, so wouldn’t need to add the code. Sorry about that!

Yes, that got rid of the error. When I tried a test signup though with a non .edu email address it still let me signup.

It is so frustrating that spammers are out there! I waste so much time each day deleting spam accounts of people who aren’t qualified to be a part of the community. I am using a plugin called Ban Hammer which lets me block domains one at a time, but I keep getting new spammers from different domains every day. Ban Hammer has helped because I’ve blocked the obvious big ones like gmail and yahoo and hotmail (and mail.ru).

Could the plugin be causing the code you gave me to not work properly?

I don’t think Ban Hammer will be causing a problem. I’ve used it myself in the past, and it would be targeting a different hook. (It’s also written by a real WP guru, who knows what she’s doing.)

I think the likely problem with the code is that it still isn’t targeting the right hook. I confess I didn’t find it easy to identify which of s2’s hooks was the right one, and I presumably got the wrong one.

This is something that I really want to be able to use too, though, so I am going to have another look.

@marktvb: Deactivate this plugin and test, I think there can be a problem. The code is more restrictive that the plugin, you will not need it if code works. And yes, you need the right hood, this can be find by sure in the s2M code only…

Deactivated Ban Hammer. Tried to register again with non .edu email and it let me register successfully still. :<

I have found an old thread where a different hook is suggested. That would make the code (assuming you are using PayPal, and still going in mu-plugins/s2-hacks.php) as follows:

add_action('ws_plugin__s2member_pro_paypal_form_submission_validation_response','validate_email_domain', 10, 3);
function validate_email_domain( $errors, $login, $email ) {
    if ( is_email($email) and  substr($email, -3) != 'edu' ) {
        $errors->add('email_domain', __('ERROR: You may only register with a .edu email address.'));
    }
return $errors;
}

Alternatively, it might need a filter instead of an action, which would make it:

add_filter('ws_plugin__s2member_pro_paypal_form_submission_validation_response','validate_email_domain', 10, 3);
function validate_email_domain( $errors, $login, $email ) {
    if ( is_email($email) and  substr($email, -3) != 'edu' ) {
        $errors->add('email_domain', __('ERROR: You may only register with a .edu email address.'));
    }
return $errors;
}

Yes, I am using Paypal with s2member, but not on this particular registration form. This is for free members to signup, I do have another set of signup forms for vendors which pay with Paypal. I tried both of these sets of code on the s2-hacks.php file one at a time (while the ban hammer plugin was deactivated) but it still allowed registration with non edu email addresses.

Ah, well, neither of these codes will have any chance of working without being used in conjunction with an s2Member PayPal form.

This is the registration page: https://www.softwarephd.com/signup/

OK, from which section in s2Member did you take the shortcode for that form?

Here is the screen in S2Member on the General Options section that I think is controlling this form:

Open Registration / Free Subscribers (optional)

s2Member supports Free Subscribers (at Level #0), along with four Primary Levels [1-4] of paid Membership. If you want your visitors to be capable of registering absolutely free, you will want to “allow” Open Registration. Whenever a visitor registers without paying, they’ll automatically become a Free Subscriber, at Level #0.

Allow Open Registration? (Free Subscribers)

Yes (allow Open Registration; Free Subscribers at Level #0)

If you set this to Yes, you’re unlocking /wp-login.php?action=register. When a visitor registers without paying, they’ll automatically become a Free Subscriber, at Level #0. The s2Member software reserves Level #0; to be used ONLY for Free Subscribers. All other Membership Levels [1-4] require payment.

BuddyPress: BuddyPress will use its own Registration Form here.
s2Member integrates with BuddyPress, and the above setting will control Open Regisration for BuddyPress too.

OK, so that hook has no chance of working for you then, because that requires an s2member PayPal Pro form, and you’re not using that.

Just finished a big project, so I had a bit more time to devote to this, and came across this thread. It looks like you use the plugin there, customize it slightly, and you should be fine.

I haven’t tried this myself, and the plugin is oldish, but I doubt the relevant code has changed. And since it’s no longer in active development, it shouldn’t get updated and wreck your customization.

Finally got around to trying krumch’s original suggestion myself on a site where I could do so. I put it in my theme’s functions.php file. It works 100% for Open Registrations. Thanks, krumch!

So my thought now is either you (marktvb) made a typo when you entered it, or else you need to delete the ?> above which you pasted it.