# PHP algorithm to calculate profitability

• Status: Closed
• Prize: \$80
• Entries Received: 6
• Winner: idiez

## Contest Brief

Create a simple algorithm in PHP to calculate profitability. details in the attachment. This project is a test project as I need few programmers to work on financial reporting very similar to this task.

Winner

## Public Clarification Board

• ###### sambestsolutions
• 4 years ago

please check my entry with the image of the part of the code and the result ... Can calculate profit for any given range for any number of entries... Please check and message

• 4 years ago
• ###### sambestsolutions
• 4 years ago

is this still open?

• 4 years ago
1. Contest Holder
• 4 years ago

it's still open

• 4 years ago
• ###### rajaaziz
• 4 years ago

working don't close early wait for entry.i hope u like my work.Thank you

• 4 years ago
1. Contest Holder
• 4 years ago

it's still open

• 4 years ago
• ###### tarik128
• 4 years ago

I found it hard, and some questions came when tried to solve it, can you tell:
- What is the formula to calculate the weighted average of previous costs for a date?
- When we have more than a Bye for one date (eg 06-20-15) what is the formula to calculate the cost for this only date?
- And same if you have more than a Sell for one date, what is the formula to calculate the profit for this only date?

• 4 years ago
1. Contest Holder
• 4 years ago

it's cost of the inventory FIFO- basically you sell the oldest inventory. each item acquired to the inventory has cost

• 4 years ago
2. ###### tarik128
• 4 years ago

I don't understand, but i will try answer my own questions and tell me if it's correct, i will take date examples from the Excel file.

For first question, if we want to calculate the weighted average of costs previous to 06-19-15, is it:
((1480-14,5*100)*10 + (1565-15,4*100)*8)/2
Or: sum((price-spot*weight)*qty)/n where n is number of previous buys?

For second question, if we want to calculate the cost for a date where we did more than a buy, in 06-20-15 we did 2 buys, i suppose the cost for this date is calculated by using the same formula as above, so we calculate the weighted average of the 2 costs for this only date to get the cost for that date?

For third question, if we want to calculate the profit for a date where we did more than a sale, in the Excel file there is always 1 Sale per date, but if we had a situation like so should we use a weighted average again to calculate the profit for a date with more than a sale?

• 4 years ago
• ###### koleszarcsaba
• 4 years ago

I would some questions according to the exercise, please contact me!

• 4 years ago
1. Contest Holder
• 4 years ago

hey

• 4 years ago
2. Contest Holder
• 4 years ago

you can call me on skype or email me at adrian@infosystrade.com

• 4 years ago
• ###### tarik128
• 4 years ago

Hi, just wondering about the nature of the project please, is it for academic or professional purpose?

• 4 years ago
1. Contest Holder
• 4 years ago

professional

• 4 years ago
• ###### hiten247
• 4 years ago

Have sent spreadsheet with daily computation in skype..let me know if thats correct, will convert into php algorithm accordingly...

• 4 years ago
1. Contest Holder
• 4 years ago

I did not see anything on skype

• 4 years ago
2. Contest Holder
• 4 years ago

can you send on email ?

• 4 years ago
• Contest Holder
• 4 years ago

call me on skype or email me at adrian@infosystrade.com

• 4 years ago
• Contest Holder
• 4 years ago

hey

• 4 years ago
• ###### koleszarcsaba
• 4 years ago

I have it almost completed, I just need a quick clarification.

• 4 years ago

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