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

Can't shake the "Warning: include()" error
I've just uploaded my site to a new server and where I have PHP include tags in my HTML, the browser

cURL and Sessions
Ohai.

So, I'm trying to cURL a bunch of things off of a page, and put them into a session. I'

Problem Dereferencing
With these types and tables:

CREATE TYPE MANAGER AS OBJECT (
MGR_ID INTEGER,

read integers that returns a negative or prints the average
Im trying to finish this homework assignment by tommarow afternoon and I keep getting stuck.
Wr

trouble printing an array....
I'm having some trouble printing out an array forwards. I'm figuring out the high and low of an arra

Need some ideas as to how to go about sorting this array...
Here's how the array's are created..

Code: <?php
while ($x = readdir($dp)) {

Validating time
Hi Guys

what do you think of the following approach to validate a 24hour time:

http://

GET vs SUBMIT Button to show sections on one index.php page?
Just curious if one of these ways is better (i.e. more efficient) than the other.

I have a

Preloading images
Posting this question here because I am not sure where this should belong.I am building an asp.net a

Performance impact of cookies
Hi, I was just wondering what impact there would be in terms of performance if you where to set then