Button for updating data - php

Question

I have a list of buttons that each pass on a different value. The code should store this value as a variable or session, which then is passed on to a function that updates the table row of the value. I tried just storing this value as a variable and then passing it on, but that didn't work so I figured I'd make it into a session. And that didn't work either, no idea where to go from here.
Here's a button example:
<tr>
<td data-title="Name"><img src="banner.jpg" width="400"></td>
<td data-title="Link">
<form name="first" action="pending.php" method="POST"><input type="hidden" name="xz" value="one"><a class="mbutton" onclick="document.forms['first'].submit();">Gedaan</a></form>
</td>
<td data-title="Status"><p class="ptable"><?= $fgmembersite->One(); ?></p></td>
</tr>
Here's where the form leads to:
<?PHP
include("./include/membersite_config.php");
$_SESSION['postdata'] = $_POST;
$bname = $_SESSION['postdata'];
if($fgmembersite->Pending($bname))
{
$fgmembersite->RedirectToURL("index.php");
}
?>
So this should pass on $bname to the function Pending().
And here's pending:
function Pending($bname)
{
if(!$this->DBLogin())
{
$this->HandleError("Database login failed!");
return false;
}
$result = mysql_query("Select * from $this->tablename where confirmcode='y'",$this->connection);
if(!$result || mysql_num_rows($result) <= 0)
{
$this->HandleError("Error");
return false;
}
$row = mysql_fetch_assoc($result);
$ux = $row['username'];
$ustat = $row['one'];
$bname = $_SESSION['postdata']['xz'];
$qry = "Update $this->tablename Set $bname='In behandeling' Where username='$ux'";
if(!mysql_query( $qry ,$this->connection))
{
$this->HandleDBError("Error inserting data to the table\nquery:$qry");
return false;
}
return true;
}

Answer 1

So you are saying that the Pending function is returning TRUE, and redirecting you to membership.php ? or index.php ( or are these the same ) -
if that query fails and returns false - you would just end up on the page that you had posted to .