more fun with forms and variables...

Dutch_MaFia-boy

What I want is the number entered in the text box to become the variable - $quantity. This is an example out of a book I bought, but I decided to take it one step further with the form. I am lost on the print statements and why the use of - $$discount and $$totalcost....why the double $$ ??

I am in the process of learning php/programming.

Here is my numbers.php file.

<html>

<head>$$totalcost.

<title>Using Numbers</title>

</head>

<body>

<?php

$cost = 2000.00;
$tax = 0.06;
$totalcost = $cost $quantity;
$tax = $tax + 1;
$totoalcost = $totalcost - $discount;
$totalcost = $totalcost $tax;
$payments = $totalcost / 12;

print ("you requested to purchase $quantity widget(s) at \$$cost each.\n<p>");
print ("the total with tax, minus your \$$discount, comes to \$$totalcost.\n<p>");

print ("you may purchase the widget(s)in 12 monthly installments of \$$payments each.\n<p>");

</body>
</html>

Here is my widgets.html file:

<html>
<head>
<title>Order</title>
</head>
<body>

<h3><center><b>Place Widgets Order</b></center></h3>

quantity <input type=text
NAME="quantity" SIZE=10><br>

</body>
</html>

matto

you got confused by the book ...

print ("you requested to purchase $quantity widget(s) at \$$cost each.\n<p>");

\$ means simply: print a dollar symbol. therefore, the $ is "escaped" by the backslash. this is necessary when using double quotes ("magic quotes") because they are parsed before output and everything starting with a $ is considered a variable.

$a = "1.50";
echo $a;

will print:
1.50

$a = "1.50";
echo "price is $a";

will print:
price is 1.50

and finally:

$a = "1.50";
echo "price is \$$a";

will print:
price is $1.50

LordShryku

Usually the use of $$ is to indicate use of a variable variable. In your case, since it's \$$, the \ is to indicate to print $ then the variable, so it will show on the page with the dollar sign in front of it.