Help with multiple if statements

[Islefyord]

I am trying to set up a form in PHP to take membership details.

Each member belongs to one of 10 classes and the classes fall into one of 4 types. What I want to do is to take the $class input and supply the $type input using a statement such as

If $class = 'a' or 'b' or 'c' then $type = 'x' else if $class = 'd' or 'e' or 'f' then $type = 'y' ... etc

I have even tried doing it with a single if statement (below) just to test whether it could work

$sql = "INSERT INTO main (Field1, Field2, Field3, Field4, Field5) VALUES ('$field1','$field2','$field3','$field4', '$field5')";
if ($field2 = "a") {
	 	($field5 = "x"); }
		$result = mysql_query($sql);

The VALUES coming from a html form

But this returns the following error:

Notice: Undefined variable: field5 in C:\Program Files\Apache Group\Apache2\htdocs\form.php on line 22

line 22 being ($field5 = "x"); }

I haven't defined any of the other variables elsewhere in the code.

I hope this makes sense, as I have been smacking my head against a wall all day over this

Thanks

Isle

And ideas, or is there an easier way to do this.

Thanks

Isle

[theeper]

If you want to do it with an if statement, it could look like this ...

if ($class == "a" || $class == "b" || $class == "c") $type = 'x';

etc...

remember == is a comparison operator, = is an assignment operator.

Doing the if's like this is ok when there isn't that many conditions to test for, but if it gets too large, you may wanna use a switch operator.

[theeper]

Also, don't put your assignments inside parentheses.

This line ...

($field5 = "x");

Should be ...

$field5 = "x";

[Islefyord]

Thanks for that Theeper, will give it a go in a bit and let you know how I get on.

Isle