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

Extracting URL pointer within XML tag
Hi.

I'm trying to extract text between two quotation marks in XML. For example, I want to ex

(sub)screen resize modification doesn't work after ECC 6 EhP 4 installation
Hello,

We have previously extended the size of the custom data tab on PO transaction ME23

values in array being escaped
I would like to submit some values - back to the same form for checking before processing...

how can i make a .gif images for my site
Dear Friends ,

Pls solve my problem , I am starting making new site but i dont know how can i

MYSQL gen help
This is my Mysql gen. can anyone tell me why this echos

MID(networkset.networkid, 3, 3) AS &q

Will an XHTML DOCTYPE interfere with my PHP if I'm not experienced enough?
I've read this article here: http://friendlybit.com/html/why-xhtml-is-a-bad-idea/

In a nutshe

How to grab certain words ??
I am working with this API

Returns JSON.
curl http://letsbetrends.com/api/current_trends

Problem with passing variables
I'm not really a php programmer so I'm really struggling with this issue.

I have a banner s

How to update this array?
I am saving a string that looks this: username1, username2, username3...
into a single cell in a

Rand() help needed
Hi all,

Can someone explain and give me a quick example of how I would go about this?