Postback URL Code For Locker - php

Question

Let me explain the story, so I am starting a website users can join and track stuff from a website, I want to create a postback link that inserts 'payout' into the table with the locker code, but when I try and test it, it gives me this error
Execute failed: (2031) No data supplied for parameters in prepared statement
So here is the code that I used...
<?php
define("MYSQL_HOST", "localhost");
define("MYSQL_PORT", "3306");
define("MYSQL_DB", "dbuser");
define("MYSQL_TABLE", "userpayout");
define("MYSQL_USER", "user");
define("MYSQL_PASS", "dbpassweord");
$mysqli = new mysqli(MYSQL_HOST, MYSQL_USER, MYSQL_PASS, MYSQL_DB);
if ($mysqli->connect_errno)
{
echo "Failed to connect to MySQL: (" . $mysqli->connect_errno . ") " .
$mysqli->connect_error;
}
$aff_sub1 = $_GET['aff_sub'];
$aff_sub2 = $_GET['aff_sub'];
$aff_sub3 = $_GET['aff_sub'];
$aff_sub4 = $_GET['aff_sub'];
$aff_sub5 = $_GET['aff_sub'];
$aff_sub6 = $_GET['aff_sub'];
$payout = $_GET['payout'];
if (!($stmt = $mysqli->prepare("UPDATE ".MYSQL_DB.".".MYSQL_TABLE." SET
payout=payout+(?) WHERE aff_sub1=(?)")))
{
echo "Prepare failed: (" . $mysqli->errno . ") " . $mysqli->error;
}
$stmt->bind_param('ds', $aff_sub1, $aff_sub2, $aff_sub3, $aff_sub4, $aff_sub5, $aff_sub5, $payout);
if (!$stmt->execute())
{
echo "Execute failed: (" . $stmt->errno . ") " . $stmt->error;
}
else
{
printf("%d Row updated, added $".$payout." to locker ".$aff_sub1." .\n",
mysqli_stmt_affected_rows($stmt));
}
?>
So I am trying to track multiple aff_subs which are the lockers that they get the payout from. I want to insert it into the row with the same affsubs.

Answer 1

Check the variables $aff_sub1, $aff_sub2, payout etc. before calling bind_param to make sure they are set.
Also make sure the postback link is invoked via GET method, since you are retrieving the variables from $_GET.