I have subscribe2 installed. I am making an email form on my site which will allow users to email other users (yes yes, my site is completely concealed from the public). The php script I have as the template for the email page, takes email addresses from values from the url and prepopulates the recipient input in the email form with a multiple select option list. for example:
will prepopulate the recipient box in the form with a select field with all of my users listed, and those three email addresses selected.
I would like to make a link to that form to be able to prepopulate the form with users SUBSCRIBED TO A PARTICULAR CATEGORY.
I cannot for the life of me figure out how to find (let alone refer to with PHP) the information in the sql database with the user subscription info.
Can someone write a few lines for me which cycles through the registered users, checks each one to see if it is subscribed to a certain topic, and if so, add it's email address on the end of the following link:
http://mydomain.com/wordpress/?page_id=35&emaillink=EMAIL_ADDRESSES_HERE (with a comma between each address)