David - in spite of your generous and patient help I am still having trouble with this! Because there are so many fields in my form and because it has been such an epic adventure getting the thing up and running at all I am reluctant to start all over again. One thing I have not discovered is where to put your code so that it executes at the right time. Otherwise I have made some of it work. I do however get an error message about the use of 'header' as it points out that it has been used before on line 104.
Please do not feel obliged to enter this morass of difficulties, you have been a lot of help so far and I am very grateful. I do wonder however whether it is just possible to intercept the error message (from MySQL?) because I have designated emailaddress as unique which says :
"Duplicate entry 'paulbaron1@gmail.com' for key 2"
that being the email address I used when trying to make a duplicate entry. key 2 is what MySQL is calling my emailaddress field. If only I could make this into a better looking message this is all I need!
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