Update Database

Posted on 16th Feb 2014 07:03 pm by admin

Hi All,


I have a problem with this:

Code: [Select]<?php
session_start();
include('../common/dbconnect.php');
$stock_id = $_GET['stock_id'];



$query='SELECT * FROM users_stocks WHERE user_id ="' . $_SESSION['user_id'] . '"';
$result = mysql_query($query, $conn) or die(mysql_error($conn));
$row = mysql_fetch_array($result);
extract($row);
$query1="SELECT t_val FROM stocks WHERE stock_id = '$stock_id'";
$result1 = mysql_query($query1, $conn) or die(mysql_error($conn));
$rows = mysql_fetch_array($result1);
extract($rows);
$query2="SELECT quant FROM users_stocks_details WHERE stock_id = '$stock_id' AND user_id ='" . $_SESSION['user_id'] . "'";
$result2 = mysql_query($query2, $conn) or die(mysql_error($conn));
$rows2 = mysql_fetch_array($result2);
extract($rows2);

//the values
$t = $row['total'];
$b = $row['bank'];
$t_val=$rows['t_val'];
$q = $_GET['quantity'];
$quant =$rows2['quant'];


//sums
$newb = $q * $t_val + $b;
$newt = $t + $newb;
$newquant = $quant - $q;

//the interesting bit

if ($q == 0)
{
echo "You Dont Have Any Stocks To Sell!";

}

if ($q > 0)

{
$updatebank = "UPDATE users_stocks SET bank = $newb WHERE user_id ='" . $_SESSION['user_id'] . "'";
$updatetotal = "UPDATE users_stocks SET total = $newt WHERE user_id ='" . $_SESSION['user_id'] . "'";
$updatequant = "UPDATE users_stocks_details SET quant = $newquant WHERE stock_id = '$stock_id' AND user_id ='" .$_SESSION['user_id']."'";


$showresults = "SELECT * FROM users_stocks WHERE user_id ='" . $_SESSION['user_id'] . "'";
$results = mysql_query($showresults, $conn) or die(mysql_error($conn));
$rrows = mysql_fetch_array($results);
extract($rrows);

echo "Thank you! You have succesfully sold $q stocks and you bank balance has incresed to $$newb, you have $newquant of these stocks left

";

}
?>
The total and bank updates work as they should, however the quantity of stocks does not decrease! Anyone see anything obvious?

Thanks

Your Answer:

Login to answer

Other forums

Need a fuction to count entries in a field
Hi
I need a fuction to count how many times a email address is entered in to a field.

I ma

Add code to enable passing of checkbox variable on login
Ok, I have a login page, but want to add a checkbox that when checked and successful login is made i

Mouseover to edit (Ajax)
hi friends, can anyone help with the code behind to get this application working, please in VB (new

Dynamically set AccordianPane Header
I have an accordian on my master page. I'd like to be able to dynamically change the header on diff

How to generate a text file using php...?
Hi,
Can anyone give me code to generate a text file using php


Thanks in advance

.htpasswd Registration Form
Hi,
I wanted to make an htpasswd registration form.
I found this code on the internet but have

Multiple while loops
I have several DB queries that I know should be returning results and aren't. I have a feeling it ha

Putting double spaces instead of single spaces
Im looking at trying to replace all single spacing between fields with double spacing

At pres

generating random codes
Hi guys n gals,

I have a requirement to generate 250,000 unique codes...

These codes a

do while conditions
i want to display 6 images in a 2x3 table
now what would be the correct logic to
count that th