Display results of a query before query itself - php

Question

I have this query:
<?php
echo $grand_total; // info on top of page
$getinfo = mysql_query("SELECT * FROM sales");
while($rows = mysql_fetch_assoc($getinfo)){
$price = $rows['price']; // I want this to be display on top of my page before this query
$quantity = $rows['quantity']; // I want this to be display on top of my page before this query
$total = $price * $quantity;
$grand_total += $total;
}
?>
I want to display the result of this query on the top of my page. Thanks in advance :)

Answer 1

Before the eggs hatch, they remain eggs and not become chickens. You can't tell someone hey here is the chicken (already) which will be hatched from this following egg once the due process completes.
TL;DR
That is not possible.
Food for thought
Imagine there was a way you could do that, then why would you want the hen to sit on those eggs and wait for them to hatch? Why would you then execute the query and waste time if you had that data already?
And Oh
The arrangement should be like that. It's like you are writing from bottom to top. I'm working with a sales report that generates a computations. But the reports should be written from bottom to top. – Archie Zineg
Write a new web programming language that will do that.
Now on to a solution
You're looking at the problem and formulating a solution the wrong way. While it is surely possible that you want to fill the lower part of report first and then go from there to top but it does not mean that you cannot fetch the data beforehand. You can easily use a template and fill it up the way you want. You can easily generate/fetch this data from database at the top and not display it anywhere until you reach the point where you want to use it.

Answer 2

Using Javascript will likely work.
<div id="grandtotal">0.00</div>
<?php
$getinfo = mysql_query("SELECT * FROM sales");
while($rows = mysql_fetch_assoc($getinfo)){
$price = $rows['price']; // I want this to be display on top of my page before this query
$quantity = $rows['quantity']; // I want this to be display on top of my page before this query
$total = $price * $quantity;
$grand_total += $total;
}
?>
<script>
// I am using jQuery here. Traditional js will work
$('#grandtotal').html('<?php echo $grand_total; ?>');
</script>

Answer 3

As explained in the comments and the other answer, you cannot echo something prior to actually retrieving it. you can however, do something like this if you will:
<?php
getFName(); //put this line at the top of your page
function getFName(){
$getinfo = mysql_query("SELECT * FROM table");
while($rows = mysql_fetch_assoc($getinfo)){
$fname = $rows['fname']; // I want this to be display on top of my page before this query
$lname = $rows['lname']; // I want this to be display on top of my page before this query
}
echo $fname;
}
?>