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- <?php
- function prevent_emails_form_user_register_form_alter(&$form, &$form_state) {
- $form['mail']['#element_validate'] = array('prevent_emails_mail_validate');
- }
- //should it be "email_validate" or "mail_validate" below ?
- function prevent_emails_email_validate($element, &$form_state) {
- //block gmail addresses
- if (stripos($form_state['values']['mail'], 'aol.com') > 0) {
- form_set_error('mail', t('Free email is not allowed.'));
- }
- }
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