[Help for a PHP select script for my website]

Do the calculation in the query

SELECT receptie.id
, receptie.marca_tel
, receptie.model
, receptie.data_primire
, articole_service.pret_sol
, articole_service.pret_achizitie
, articole_service.pret_sol - articole_service.pret_achizitie as profit    -- add this
FROM receptie 
inner join articole_service on receptie.id = articole_service.id_receptie

then output $row['profit']

 

Thank you very much - it works perfectly. And for my second problem - to display the totals for each id.

As said: on an ID I have multiple articles prices / and profit for each article. I want to count total for an ID:

 

 

  edit - image removed

[Help for a PHP select script for my website]

Hello,

 

I am glad I joined this forums, seems a good way to find out all about web-programming. I`m starting to check most of the topics.

I am posting because I need an advice / solution to some project I am working on.

 

Short info: It is in fact on a sub-page, where I wish to display some info from the MySQL database via PHP.

 

Sub-Problem #1.

I managed to display all other columns / rows but the last one is an actual "Operation = Subtraction" from the last 2.

Since it is in an array, I do not know how to do that - to correlate one with another. Managed to make other info's on the site but when they were not in an array.

 

$Profit = $Pret_sol - $Pret_achizitie

(translation: profit = price asked to client - acquisition price)

 

 

Sub-Problem #2.

Also, as each ID (its an order number ID - can have multiple parts and prices - as shown in the picture - how can I only display totals value for an order ID (total $pret_sol / $pret_achizitie), so that it does not display each consecutive one?

 

 

That would be all, please let me know  your solutions or advice, I give you:

 

1. Website screen actual working.

2. Part of the code with the functions.

 

Thank you very much!

 

 

     

<div class="row">
                    <div class="col-sm-12">
						<h4 class="page-title">Financiar rapoarte <font color="d3283c"> ></font> Toate facturile</h4>
                        <div class="card-box table-responsive">
                            <table id="datatable-buttons" class="table table-hover m-0 table-bordered">
                                <thead>
                                    <tr>
                                        <th><font color="337ab7">Numar intrare</font></th>
                                        <th><font color="337ab7">Marca</font></th>
                                        <th><font color="337ab7">Model</font></th>
                                        <th><font color="337ab7">Data livrare</font></th>
										<th><font color="337ab7">Venit / Facturat</font></th>
										<th><font color="337ab7">Cheltuieli</font></th>
										<th><font color="5cb85c">Profit</font></th>
                                    </tr>
                                </thead>

                                <tbody>
								
								<?php
			$result = mysql_query("SELECT receptie.id, receptie.marca_tel, receptie.model, receptie.data_primire, articole_service.pret_sol, articole_service.pret_achizitie FROM receptie inner join articole_service on receptie.id = articole_service.id_receptie");
				while ($row = mysql_fetch_array($result))
		
		

								{
								?>
                                   <tr>
										<td><?php echo $row['id']; ?></td>
										<td><?php echo $row['marca_tel']; ?></td>
										<td><?php echo $row['model']; ?></td>
										<td><?php echo $row['data_primire']; ?></td>
										<td><?php echo $row['pret_sol']; ?></td>
										<td><?php echo $row['pret_achizitie']; ?></td>
										<td>Profit=Pret_sol-Pret_achizitie</td>
								   </tr>
								<?php } ?>
                                </tbody>
                            </table>
                        </div>
                    </div><!-- end col -->
                </div>
                <!-- end row -->