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help me find out what this error message means:

 

"Duplicate entry '0' for key 'PRIMARY'"

 

the sql for it is

INSERT INTO accounts (firstname, lastname, username, password, joined, email, level) VALUES ('$_POST[fname]','$_POST[lname]','$_POST[user]',sha1('$_POST[pass]'),'$date','$_POST[email]','norm')";
$sqlcheck= mysql_query("SELECT * FROM accounts WHERE username = '$_POST[user]' OR email = '$_POST[email]'

 

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Bump. And to clearify the sql i used was:

INSERT INTO accounts (firstname, lastname, username, password, joined, email, level) VALUES ('$_POST[fname]','$_POST[lname]','$_POST[user]',sha1('$_POST[pass]'),'$date','$_POST[email]','norm')

 

(on the original post I accidentally included the variable below it)

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The error message does state what the problem is - one of your columns is defined as a primary key and you are trying to insert a duplicate value for that column.

 

What do you want to happen when this condition (duplicate data values) occurs?

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