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Re: display two values on page [message #181137 is a reply to message #181130]

Thu, 18 April 2013 13:08

Jerry Stuckle
Messages: 2598
Registered: September 2010

Karma:

Senior Member

In addition to what the others have said:

On 4/18/2013 5:44 AM, newbie php wrote:
<snip>

$p=isset($_POST['price']) ? $_POST['price'] : 0;
$n=isset($_POST['number']) ? $_POST['number'] : 0;

The reason being - your page may be called from pages other than the
form (i.e., someone typing the URL into the browser bar), in which case
$_POST['price'] and $_POST['number'] won't be set. This code will set
0's into $p and $n should the values not be set.

Better yet - don't put things like prices in hidden fields. It would be
very easy for me to create a form on my own machine which sets a price
of 1. You can display the price to the user, but keep critical values
like this on the server.

Remember - NOTHING from the user is ever safe and EVERYTHING needs to be
validated.

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex(at)attglobal(dot)net
==================

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[Message index]

		display two values on page By: newbie php on Thu, 18 April 2013 09:44
		Re: display two values on page By: Tim Streater on Thu, 18 April 2013 10:01
		Re: display two values on page By: Christoph Becker on Thu, 18 April 2013 10:14
		Re: display two values on page By: Tim Streater on Thu, 18 April 2013 12:05
		Re: display two values on page By: Paul Herber on Thu, 18 April 2013 10:12
		Re: display two values on page By: Christoph Becker on Thu, 18 April 2013 10:18
		Re: display two values on page By: newbie php on Thu, 18 April 2013 10:22
		Re: display two values on page By: Jerry Stuckle on Thu, 18 April 2013 13:08
		Re: display two values on page By: Luuk on Thu, 18 April 2013 16:46

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