Another form handling posting question

I am trying to recursively send data to the same form. Based on the data, I
want to determine which "action" is to be processed. It appears that the
$_POST is not being cleared out or cached once it is sent to the server.
Here is my code that I'm trying to test with. It doesn't seem to
consistently send me to the correct page each time.

<?php

$process = $_POST['process'];

if ($process == "Pass")
{
echo "<form method='POST' action=success.php>";
}
else
{
echo "<form method='POST' action=recursive.php>";
}
?>

<table border="0" id="table1" width="58">
<tr>
<td align="center">
<input type="radio" checked name="process" value="Pass"
tabindex="1"></td>
<td align="left">Pass</td>
</tr>
<tr>
<td align="center" width="20">
<input type="radio" name="process" value="Fail" tabindex="2"></td>
<td align="left" width="28">
Fail</td>
</tr>
</table>
<input type="submit" value="Submit" name="B1"> <input type="reset"
value="Reset" name="B2">
</form>

I want to use a single submit button that will send the "action" to the
right page.

What is the best practice for doing this?
.