postcode search problem...

[davieboy]

i am using the code

<?php


include("config.php");

//postcode entry form for first use
if (!$postcode)
{
?>
	<form action="<? printf($PHP_SELF); ?>" method="post">
		Enter Postcode<br>
	    <input name="postcode" type="text" class="elementBlue" size="10">
	    <br>
	    <input name="Submit" type="submit" class="elementBlue" value="Submit">
	</form>

<?
}
//if a postcode has been entered
if ($postcode)
{
	//you can only pass 3 set variables into this function
	//hence the globals.
	function startElement($parser, $name, $attrs)
	{
		global $count;
		global $postcode_array;

	//checks to see if any addresses have been found
	if (($name == "DATA") & ($attrs[ITEMS] == "0"))
	{
		printf("You have no results");
		printf("<form action=\"manual_address.php\" method=\"post\">");
		printf("<input name=\"Submit\" type=\"submit\" value=\"Manualy enter address\">");
		printf("</form>");
	}
	//if an element is avalable
	else if ($name == "ITEM")
	{
		$count++;
		$postcode_array[$count][1] = $attrs[ID];
		$postcode_array[$count][2] = $attrs[DESCRIPTION];
	}
}

//this function is also "needed"
//but in this case not used.
function endElement($parser, $name)
{
	printf("\n");
}

//this function is also "needed"
//but in this case not used.
function characterData($parser, $value)
{
	printf("$value<BR>");
}


$simpleparser = xml_parser_create();
xml_set_element_handler($simpleparser, "startElement","endElement");
xml_set_character_data_handler($simpleparser,"characterData");

//cleaning up input
$postcode = trim($postcode);
$postcode = str_replace(" ","",$postcode);
$postcode = strtoupper($postcode);

//this is the query string that the XML is run from.
//to used this for other data sources just change the URL to another one or a file location.
$query = "http://services.postcodeanywhere.co.uk/xml.asp?action=lookup&account_code=$postcode_account_code&license_code=$postcode_license_code&postcode=$postcode";

if (!($fp = fopen($query, "r")))
{
	die("could not open file/URL");
}

while ($data = fread($fp, 4096))
{
	if (!xml_parse($simpleparser, $data, feof($fp)))
	{
		die(xml_error_string(xml_get_error_code($simpleparser)));
	}
}
xml_parser_free($simpleparser);

//now we should have all the items in an array that we can use as normal PHP variables :o)
//the array will hold the following..
//$postcode_array[$foo][1] will return the id value for item array number $foo
//$postcode_array[$foo][2] will return the address value for item array number $foo


//I have represented this in a selection box below...
if ($count > 0)
{
?>
<form action="address_xml.php" method="post">
<select name="postcode_id" size="<? printf(count($postcode_array)); ?>" class="footer">
<?
	$count2 = 0;
	while ($count2 <= count($postcode_array))
	{
		$count2++;
		?>
			<option value="<? printf($postcode_array[$count2][1]); ?>" <? if ($count2 == 1) { echo " selected"; } ?>><? printf($postcode_array[$count2][2]); ?></option>
		<?
	}
?>
</select><br>
<input name="Submit" type="submit" class="elementBlue" value="Use selected address">
</form>
<form action="manual_address.php" method="post">
<input name="Submit" type="submit" class="elementBlue" value="Manualy enter address">
</form>
<?
}
}
?>

it works, but in my form page, having submitted the postcode i have:

address

and then the address at the end of the page

can anyone see why?