Having a problem with radio button fields and php and mysql

[Phrank]

I have a form with several types of fields on it including some radio buttons. When I try to write the data to a mysql database all of the radio button fileds are undefined.

I tried to go to the database and put a default for each of the radio button fields - a "U". No help.

I put "checked" with the first choice of the radio field. No help.

I tried to initialize the radio fields just before writing them to the db but I must be doing something wrong.

if (!isset($EngineType) {
$EngineType = "U";
}

I am sure you guys have run into this problem b4.

What is the solution?

[devinemke]

a simple example:

<?php
if (!isset($_POST['submit']))
{
	echo '
	<form action="" method="POST">
	select an option:<br>
	<input type="radio" name="option" value="1">1<br>
	<input type="radio" name="option" value="2">2<br>
	<input type="radio" name="option" value="3">3<br>
	<input type="radio" name="option" value="4">4<br>
	<input type="radio" name="option" value="5">5<br>
	<input type="submit" name="submit" value="submit">
	</form>
	';
}
else
{
	if (isset($_POST['option']))
	{
		echo 'you selected option ' . $_POST['option'] . ', so a query might look like:<br>
		INSERT INTO table SET option = ' . $_POST['option'];
	}
	else
	{
		echo 'you did not select an option';
	}
}
?>