I cannot get this to work for the life of me, it is PHP.
Simplest way I know of:
Edit: Corrected the code to show the form data and empty values errors seperatly.
Explanation: The first if statement checks that the submitted form contained two fields, ign and email. This is done to stop the second if statement , in the case that ign or email weren't passed in at all, from throwing an error(message would be printed to server logs). The second if statement checks the values of ign and email to see if they contain data.