Math Equation

[Graxeon]

I have a math equation that calculates profit. What I don't know how to implement is "times." Times is how many times you repeat the equation. Each time you repeat it though, it uses the new TOTAL cash.

 

So let's say I had this:

 

equation.php?cash=100&cost=20&profit=3&times=7

 

It should calculate this:

 

100/20 = 5

5*3 = 15

(now it calculates the "times")

100+15 = 115

115/20 = 5.75

5.75*3 = 17.25

("times" #3)

115+17.25 = 132.25

132.25/20 = 6.6125

6.6125*3 = 19.8375

(then keep repeating until you get to "&times=7")

 

<?php

$cash = $_GET['cash'];
$cost = $_GET['cost'];
$profit = $_GET['profit'];
$times = $_GET['times'];


$equation = $cash / $cost * $profit;
//I don't know how to implement $times

echo $equation;

?>

[Buddski]

$cash = $_GET['cash'];
$cost = $_GET['cost'];
$profit = $_GET['profit'];
$times = $_GET['times'];

$equation = 0;
for ($i=0;$i<$times;$i++) {
$equation += ($cash / $cost * $profit);
}

echo $equation;

Im assuming you want a complete total with this script

[JonnoTheDev]

To have something iterate x number of times you use a loop construct i.e

<?php
$numberOfTimes = 3;
for($x = 1; $x <= $numberOfTimes; $x++) {
  print "loop number ".$x."<br />";
}
?>

[Graxeon]

@Budd

 

That gave me "105" as the answer. The answer should be well over 132

 

@neil

 

I'm sorry, you lost me xD

(though that's like almost the same thing as Budd's code)

[Buddski]

He was just giving you a run down of how to do a for loop.. Thats all.

$cash = $_GET['cash'];
$cost = $_GET['cost'];
$profit = $_GET['profit'];
$times = $_GET['times'];

for ($i=0;$i<$times;$i++) {
$cash += ($cash / $cost * $profit);
}

echo $cash;

 

I think is correct now.. I didnt read your post properly.. (Its 3am)

[Graxeon]

Thank you very much

[Graxeon]

Oh just a quick question:

 

Is there any way to add commas? The number is hard to read if it goes into the millions.

 

So instead of displaying "158782393.387839" it'll display it like "158,782,393.387839"

[Buddski]

I dont know how it will go with millions but..

echo number_format($cash,2,'.',',');

[Graxeon]

Perfect, thank you