Update Database


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

Hi All,


I have a problem with this:
Did you know?Explore Trending and Topic pages for more stories like 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
No comments posted yet

Your Answer:

Login to answer
310 Like 23 Dislike
Previous forums Next forums
Other forums

Making multiple rows with one query
I have a table called efed_handler_characters with two fields handler_id and bio_id. What query 2 is

Print out contents of to Excel
I have got this script that gathers all the data that I need but I need it to send it to excel inste

Blank record injected into database
I always found several blank records inside my database, although $SESSION is required to insert the

Warning message
I've put a website that I was doing live and I'm getting this warning message when I try to add a ne

compile php5 with DOM
Hi,

I can't manage to compile php 5.3.0 from source on Windows to include DOM,
in spite of

Production of mango in processing industry
Hi,

We have one scenario ,company is in process industry,they are manufacturing MANGO pul

PHP Session Issue
I'm having an issue with one section on my website dealing with sessions. Now I know that myself and

How to create a static html menu from a database
Hi,

I have built a small cms which allows me to create simple html pages and then upload them

Procedural to OOP
John Kleijn said that to avoid writing "crappy code", we should learn OOP and common OO pr

PHP, jAVASCRIPT setting input values, why isn't it working?
Hi:

I am calling this javascript:
<script language="javascript">

Sign up to write
Sign up now if you have flare of writing..
Login   |   Register
Follow Us
Indyaspeak @ Facebook Indyaspeak @ Twitter Indyaspeak @ Pinterest RSS



Play Free Quiz and Win Cash