What I have is a script that calculates sales figures for facilities in an online game. The last part of this script that I need to work out is how to copy the financial data into a second table, which will be used as a ledger to display sales revenue for each facility. Everything works fine except that the insert query won't recognize the $revenue variable. It inserts a new row in the table for each facility like it's supposed to, with all the correct info, except the amount shows up as $0.00 instead of $revenue. If I change this line in the query:
$amount = "$revenue";
to something generic like:
$amount = "11";
It will work correctly, and insert $11.00 as the revenue for each facility. So the problem is somewhere with the $revenue variable, and I can't seem to work it out. The $revenue variable works fine in other areas of the script, such as updating the company's money.
Here's the entire script:
<?php
$currentTime = time(); // current time (seconds since UNIX epoch)
$update = "facility_sales";
require_once($_SERVER['DOCUMENT_ROOT'] . '/includes/dbconn.php');
/* Grab the company facility info from the company_facilities table */
$stmt = $dbh->query("SELECT * FROM company_facilities");
while($data = $stmt->fetch()) {
/* Get average wages for all companies */
$sth = $dbh->prepare("SELECT AVG(employee_wage) FROM company_facilities");
$sth->execute();
$avg_wage = $sth->fetchColumn();
/* Get wages from user's company */
$sth = $dbh->prepare("SELECT employee_wage FROM company_facilities WHERE id = ?");
$sth->execute(array($data['id']));
$wage = $sth->fetchColumn();
/* Get employees from user's company */
$sth = $dbh->prepare("SELECT employees FROM company_facilities WHERE id = ?");
$sth->execute(array($data['id']));
$employees = $sth->fetchColumn();
/* Get managers from user's company */
$sth = $dbh->prepare("SELECT managers FROM company_facilities WHERE id = ?");
$sth->execute(array($data['id']));
$managers = $sth->fetchColumn();
/* Get equipment from user's company */
$sth = $dbh->prepare("SELECT equipment FROM company_facilities WHERE id = ?");
$sth->execute(array($data['id']));
$equipment = $sth->fetchColumn();
/* Get price from user's company */
$sth = $dbh->prepare("SELECT unit_price FROM company_facilities WHERE id = ?");
$sth->execute(array($data['id']));
$price = $sth->fetchColumn();
/* Get units_in_stock from user's company */
$sth = $dbh->prepare("SELECT units_in_stock FROM company_facilities WHERE id = ?");
$sth->execute(array($data['id']));
$units_in_stock = $sth->fetchColumn();
/* Get average unit_price for all companies */
$sth = $dbh->prepare("SELECT AVG(unit_price) FROM company_facilities WHERE unit_price > 0 AND specialty = '".$data['specialty']."'");
$sth->execute();
$avg_price = $sth->fetchColumn();
/* Calculate employee to equipment ratio */
$ratio = ($equipment/$employees);
if($ratio > 1){
$ratio = 1;
}
else{
$ratio = $ratio;
}
/* Calculate the difference between wage and average wage */
$difference = ($wage-$avg_wage);
/* Calculate Wage Modifier */
$wage_modifier = (($difference/$avg_wage)*1.8);
if($wage_modifier > 0){
$mod = $difference/$avg_wage;
$wage_modifier = (pow(sqrt($mod),1.2))*1.4;
}
// Wage modifier only affects production, not sales, for the following facilities.
if($data['field'] == "Mining" || $data['field'] == "Farming" || $data['field'] == "Production"){
$wage_modifier = 0;
}
/* Get the units per hour number */
if($data['field'] == "Mining"){
$UPH = 0.672;
}
if($data['field'] == "Farming"){
$UPH = 0.672;
}
if($data['specialty'] == "Aluminum" || $data['specialty'] == "Steel" || $data['specialty'] == "Glass" || $data['specialty'] == "Rubber" || $data['specialty'] == "Fabric" || $data['specialty'] == "Plastic"){
$UPH = 0.336;
}
if($data['specialty'] == "Leather" || $data['specialty'] == "Chassis" || $data['specialty'] == "Body" || $data['specialty'] == "Window" || $data['specialty'] == "Tires" || $data['specialty'] == "Interior" || $data['specialty'] == "Engine"){
$UPH = 0.168;
}
if($data['specialty'] == "Vehicle"){
$UPH = 0.084;
}
if($data['field'] == "Retail"){
$UPH = 0.042;
}
/* Calculate preliminary sales number */
$pre_sales = ($UPH*$employees);
/* Calculate the equipment modifier */
$equipment_modifier = ($ratio/4);
// Equipment modifier only affects production, not sales, for the following facilities.
if($data['field'] == "Mining" || $data['field'] == "Farming" || $data['field'] == "Production"){
$equipment_modifier = 0;
}
/* Calculate the Manager modifier */
$manager_modifier = sqrt(($pre_sales*(0.1*$managers)));
$manager_mod_max = $employees/10;
if($manager_modifier > $manager_mod_max){
$manager_modifier = $manager_mod_max;
}
// Manager modifier only affects production, not sales, for the following facilities.
if($data['field'] == "Mining" || $data['field'] == "Farming" || $data['field'] == "Production"){
$manager_modifier = 0;
}
/* Calculate the price modifier */
$price_modifier = ((($price-$avg_price)*0.25)*-1);
/* Finally, calculate the total sales */
$sales = floor(($pre_sales+$equipment_modifier+$wage_modifier+$price_modifier+$manager_modifier));
if($units_in_stock < $sales){
$sales = floor($units_in_stock);
}
$revenue = $sales*$price;
/* Update facility units */
$sth = $dbh->prepare("UPDATE company_facilities SET units_in_stock = units_in_stock - ?, sold_last_hour = ? WHERE id = ?");
$sth->execute(array($sales,$sales,$data['id']));
/* Update company money */
$sth = $dbh->prepare("UPDATE companies SET money = money + ? WHERE id = ?");
$sth->execute(array($revenue,$data['company_id']));
}
$sth = $dbh->prepare("SELECT * FROM company_facilities");
$sth->execute();
$datas = $sth->fetchALL();
foreach($datas as $data2) {
/* Insert into company finance ledger */
$stmt = $dbh->prepare("INSERT INTO company_finance (date, company_id, company_name, type, amount, description) VALUES (?, ?, ?, ?, ?, ?)");
$stmt->bindParam(1, $date);
$stmt->bindParam(2, $company_id);
$stmt->bindParam(3, $company_name);
$stmt->bindParam(4, $type);
$stmt->bindParam(5, $amount);
$stmt->bindParam(6, $description);
// insert one row
$date = "$currentTime";
$company_id = "".$data2['company_id']."";
$company_name = "".$data2['company_name']."";
$type = "revenue";
$amount = "$revenue";
$description = "Product Sales (".$data2['facility_name'].")";
$stmt->execute();
}
?>