Re: [PHP] checkbox doesn't pass?
At 04.04.2002 15:23, you wrote:
I have a html form with some text (T1) and checkbox (C1) fields to pass
it to a php script.
Accessing text fields has no problem.
There is a problem when I use
$C1=$HTTP_POST_VARS['C1']
to take the value of C1 (ON)
If it is not checked, then it is not set at all. (??why??)
So I use :
if (!isset($C1)) { $C1=0 }
but still I get an warning that C1 is not set, on my screen.
That happens before the use of isset function.
How can I susspent this warning message?
Makis,
why do you use $HTTP_POST_VARS? Do I miss something?
if you have a form and send it, the vars have the same names as in your
form, will say if your checkbox name=foo value=someval will be transmitted,
then in the following page there´s a var named $foo. and the value will be
someval
if the box is checked, otherwise there´s no (or NULL or FALSE ???) value in it.
I personally prefer put checkbox vars (if there are several) in an array
f.e. $foo[]
In the following page I just scan the array and if there´s a value in a field
thats fine.
HTH Oliver
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Re: [PHP] checkbox doesn't pass?
On Thursday 04 April 2002 20:46, [EMAIL PROTECTED] wrote: why do you use $HTTP_POST_VARS? Do I miss something? For security reasons. Manual Security -- Jason Wong - Gremlins Associates - www.gremlins.com.hk /* Above all things, reverence yourself. */ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] checkbox doesn't pass?
Thank you both for help and info! You were both very fast :) I didn't know I could not to use $HTTP_POST_VARS . Now it works all right. But IF I still want to use $HTTP_POST_VARS, what then? What about the warning when checkbox is not checked? Thanks Makis -Original Message- From: Jason Wong [mailto:[EMAIL PROTECTED]] Sent: Thursday, April 04, 2002 5:51 PM To: [EMAIL PROTECTED] Subject: Re: [PHP] checkbox doesn't pass? On Thursday 04 April 2002 20:46, [EMAIL PROTECTED] wrote: why do you use $HTTP_POST_VARS? Do I miss something? For security reasons. Manual Security -- Jason Wong - Gremlins Associates - www.gremlins.com.hk /* Above all things, reverence yourself. */ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] checkbox doesn't pass?
At 18:17 04-04-02 +0300, savaidis wrote: But IF I still want to use $HTTP_POST_VARS, what then? What about the warning when checkbox is not checked? I use empty() to check the for the existence of checkbox variables. -- - Eugene Mah, M.Sc., DABR [EMAIL PROTECTED] Medical Physicist/Misplaced Canuck[EMAIL PROTECTED] Department of Radiology For I am a Bear of Very Little Medical University of South Carolina Brain, and long words Bother Charleston, South Carolina me. Winnie the Pooh http://home.netcom.com/~eugenem/ PGP KeyID = 0x1F9779FD, 0x319393F4 PGP keys available on request ICQ 3113529 O- - -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] checkbox doesn't pass?
You should use $HTTP_POST_VARS (or $_POST) all of the time. There's security risks in
using register_globals. It's not risky in all cases. But register_globals will allow
arbitrary variables to be added to into the name space of your script by simply
putting them on the uri. Code not expecting such input, and expecting variables not
to exist unless the script set them may behave unexpectedly.
The reason the variable is not set is that the checkbox isn't checked. You can test
the variable with isset(), or empty() before you use it so you don't get the warning.
To learn what your script it seeing when you submit the page, do a:
foreach ($HTTP_POST_VARS as $key = $value) {
echo Key: $key Value: $valuebr\n;
}
at the top of your action handler script, and watch the variables come in when you
check or not check the checkboxes. Once you understand that, then write the code to
handle the situation.
-Original Message-
From: savaidis [mailto:[EMAIL PROTECTED]]
Sent: Thursday, April 04, 2002 10:17 AM
Thank you both for help and info! You were both very fast :)
I didn't know I could not to use $HTTP_POST_VARS . Now it
works all right.
But IF I still want to use $HTTP_POST_VARS, what then? What about the
warning when checkbox is not checked?
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Re: [PHP] checkbox doesn't pass?
But IF I still want to use $HTTP_POST_VARS, what then? What about the warning when checkbox is not checked? I use empty() to check the for the existence of checkbox variables. You can also use isset(); Chris -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] checkbox doesn't pass?
Unchecked checkboxes pass no values, that's how it works. It's either set or not. Default value for a checkbox is 'on' although you can change that. isset() will work fine. Regards, Philip -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
