Using php filter_var with mysql_real_escape_string

Question

I would like to start my question by saying, I realize PDO/mysqli is the new standard and has been widely covered on SO. However in this particular case I dont have time to conv

Answer 1

In this case, if the filter fails the query will be:

SELECT email FROM members WHERE email = '0'

So, not much to worry about the query; it just won't return any results.

Unless of course, you have a similar insert / update query.

In which case, you could have plenty of rows in the database where the email is '0'