Variable not getting passed to form

[ikke]

Hello,

I have some weird things the following code work

<? echo
"<A HREF='$PHP_SELF?action=view_product&
sessie=leeg');\">leegmaken</A>";
?>

And this code not

<FORM METHOD=POST ACTION=<?'$PHP_SELF?action=view_product&sessie=leeg';?>>
<INPUT TYPE='submit' VALUE='Leegmaken'>
</TD>
</TR>
</FORM>

This code must run when $sessie = "leeg"

<? if ($sessie =="leeg")
{
session_destroy();
$sessie="vol";
}
if($sessie =="vol")
{
$sessie=" ";
?>
<SCRIPT>history.go(-2)</SCRIPT>
<?
}
?>

Someone has an idea why that is?

[ikke]

I figured it out :)

This is it

<? $leeg = "$PHP_SELF?action=view_product&sessie=leeg";?>
<FORM METHOD=POST ACTION=<?echo $leeg;?>>
<INPUT TYPE='submit' VALUE='Leegmaken'>
</FORM>