mysql - PHP ~ Column count doesn't match value count at row 1

Question

I'm creating a registration and I'm using just straight PHP not JavaScript to send my form to the MySQL database, so everything is working fine, no syntax error or anything but I fill out all my information and click 'Register' and it returns a message saying 'Column count doesn't match value count at row 1'.

I'm only 14 so this is pretty confusing for me does anyone have a solution?

This is my INSERT INTO code:

 $sql = mysql_query("INSERT INTO users(firstname, lastname, email, password, day, month, year, gender) 
 VALUES('$firstname','$lastname','$email','$db_password','$day','$month','$year')")  
 or die (mysql_error());

Answer 1

You are trying to insert 7 values into 8 columns - you are missing the insertion of gender.

The correct code would be:

$sql = mysql_query("INSERT INTO users(firstname, lastname, email, password, day, month, year, gender) 
VALUES('$firstname','$lastname','$email','$db_password','$day','$month','$year', '$gender')")  
or die (mysql_error());

By the way, if you are not already doing it, I highly recommend escaping the strings first, before passing them to the query like so:

$firstname=mysql_real_escape_string($firstname)

You should do this with all variables above. Here you can find more about the escape function.