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
68 
47 
Other forums
Form File Upload
I've read through tons of resources and tutorials and as far as I can tell, my code is accurate, but
captcha error
I have been trying to implement a captcha in php...
here is the code..
Code: (php) [Select
Join Query Help
Hi all,
I am having problems with the below code, which we shall call 'my first join query'!
Month String to Numeric?
Hi guys,
Given a month as a string, is there a simple way to find the numeric representation
need help with date function
i have following form for date
Code: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01
no idea what to do...
I'm fed up. I had issues with code that I have working on a different site that didn't work on my cu
sql error
I have been looking at this code for 20mins and can't work out what I am doing wrong. There is somet
Where is my php.ini???
Hi
First off - apologies - i'm not a coder so this may sound very amateur.
I'm having
PRotect my POST DATA... FROM HTML ATTACKS
I need to like let's say
If a user submit's his Prayer and he put's <meta refresh stuf
php code generators
All
Whilst enjoying learning a new language i have come accross a number of free code generat
