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

No comments posted yet

Your Answer:

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

strptime() equivalent for php4 ?!
Greetings!

this is my first post, thank you in advance for your replies.

Well, the ti

Weird problem with SELECT command..Help!
Hi!

It seems I'm having a really weird problem with SQL SELECT command....I have table into a

Error In Syntax
I got this error:

Code: Parse error: syntax error, unexpected '>' in /home/bucket/publ

parameter passing issue on function
Well I thought I had created a pretty slick web page, using ?page and $_GET to load pages which wher

User registration and login
I don't know whether this is the correct forum, if not i apologise but am pretty desperate at the mo

Please help with code for SMTP authenticated PHP email form
Hello, I'm creating a PHP email form, and for this particular server, I have to use SMTP Authenticat

Confusing Functions
So, I've been reading up on Functions and I like them! However, I need some help using variables in

Error with login script
I am getting an error with my login script:

Error:
Code: Warning: Cannot modify header inf

Post, not working, please help
The error is:
Method Not Allowed
The requested method POST is not allowed for the URL /student

How to use php and sql to check if values match the ones in a table (for logins)
How would I code it that the script takes two variables that are passed to it (UserID and PIN), and

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