Gegevens uit DB lezen en vervolgens veranderen

<?
$id = (int) $_GET["id"];

if ( !empty ( $_POST["submit"] ) ) {
	$query = "UPDATE `tabel` SET `veld1` = '%s', `veld2` = '%s' WHERE id = %d";
	mysql_query( sprintf( $query, $_POST["veld1"], $_POST["veld2"], $id ) );

} else {
	echo '<form id="form1" method="post" action="xx">';
	$query = "SELECT `veld1`, `veld1` FROM `tabel` WHERE id = %d";
	$result = mysql_query ( sprintf ( $query, $id ) );
	while ( $row = mysql_fetch_array($result, MYSQL_ASSOC) ) {
		echo '<input type="text" name="veld1" value="'.$row["veld1"].'" />';
		echo '<input type="text" name="veld2" value="'.$row["veld2"].'" />';	
	}
	echo '<input type="submit" name="submit" />'
	echo '</form>'
}
?>

<?
$id = (int) $_GET["id"];
 
if ( !empty ( $_POST["submit"] ) ) {
	$query = "UPDATE `tabel` SET `veld1` = '%s', `veld2` = '%s' WHERE id = %d";
	mysql_query( sprintf( $query, $_POST["veld1"], $_POST["veld2"], $id ) );
 
} else {
	echo '<form id="form1" method="post" action="xx">';
	$query = "SELECT `veld1`, `veld1` FROM `tabel` WHERE id = %d";
	$result = mysql_query ( sprintf ( $query, $id ) );
	while ( $row = mysql_fetch_array($result, MYSQL_ASSOC) ) {
		echo '<input type="text" name="veld1" value="'.$row["veld1"].'" />';
		echo '<input type="text" name="veld2" value="'.$row["veld2"].'" />';	
	}
	echo '<input type="submit" name="submit" />'
	echo '</form>'
}
?>