Cookies

**prog_tom** · Jul 29th, 2002, 12:15 AM

Warning: Cannot add header information - headers already sent by (output started at /home/tom/sviesoft/login/login.php:8) in /home/tom/sviesoft/login/login.php on line 1000099238

what is wrong?

**ubunreal69** · Jul 29th, 2002, 02:03 AM

youre probably new to this whole cookie deal

the reason you probably got that error is because you have already written some output data. you have to set a cookie before any " ECHO ''; " or crap like that. did this help ?

**cpradio** · Jul 29th, 2002, 06:58 AM

To sum up what ubunreal69 said a bit clearer..

A cookie has to be set before any output of any kind is made. This includes html, javascript, php echo or print statements, etc.

Example (these will not work):

PHP Code:


<html>

<?php setcookie("","","","",""); ?>

PHP Code:


<?php

  echo "Text";

  setcookie("","","","","");

?>

Example (these will work):

PHP Code:


<?php setcookie("","","","",""); ?>

<html>

PHP Code:


<?php

  setcookie("","","","","");

  echo "Text";

?>

**Gimlin** · Jul 29th, 2002, 07:44 AM

How would you see if a cookie existed?

**phpman** · Jul 29th, 2002, 07:44 AM

Originally posted by prog_tom
Warning: Cannot add header information - headers already sent by (output started at /home/tom/sviesoft/login/login.php:8) in /home/tom/sviesoft/login/login.php on line 1000099238

what is wrong?

show us the code?

**cpradio** · Jul 29th, 2002, 07:59 AM

Originally posted by Gimlin
How would you see if a cookie existed?

PHP Code:


if (isset($_COOKIE['variable name']))

  echo "The cookie exists with the value of ".$_COOKIE['variable name'];

else

  echo "The cookie does not exist."

**Gimlin** · Jul 29th, 2002, 08:13 AM

thanks

**prog_tom** · Jul 29th, 2002, 10:06 AM

I tried:

PHP Code:


<?setcookie("myage","12",time()+600);print "$myage";?>

doesn't work.

you may view this file at
http://www.sviesoft.com/beta/cookie.php

**cpradio** · Jul 29th, 2002, 10:12 AM

you should always set as the path and domain portions of the cookie.

PHP Code:


<?php

 setcookie("myage","12",time()+600,"/",$_SERVER['HTTP_HOST']);

 if (!isset($_COOKIE['myage']))

  echo "Please Refresh the page.";

 else

  echo $_COOKIE['myage'];

?>

Viewable at http://cpradio.net/cookieTest.php
Source Code: http://cpradio.net/cookieTest.phps

**phpman** · Jul 29th, 2002, 10:16 AM

Originally posted by prog_tom
I tried:

PHP Code:

<?setcookie("myage","12",time()+600);print "$myage";?>

doesn't work.

you may view this file at
http://www.sviesoft.com/beta/cookie.php

we need to see the whole page.

**cpradio** · Jul 29th, 2002, 10:16 AM

Originally posted by phpman

we need to see the whole page.

No we don't

**The Hobo** · Jul 29th, 2002, 11:45 AM

Originally posted by prog_tom
I tried:

PHP Code:

<?setcookie("myage","12",time()+600);print "$myage";?>

Just a few quick notes:

According to standards, you should always use "<?php" instead of "<?" You should also never put more than one statement on one line.
Cookies should be displayed as "$_COOKIE["myage"]" for 4.2 compatability.
And finally: "Cookies will not become visible until the next loading of a page that the cookie should be visible for." So printing "$myage" would not work until you refreshed.

Matt already covered most of these, but I thought I'd buzz in anyways.

**phpman** · Jul 29th, 2002, 11:49 AM

Originally posted by cpradio

No we don't

well I thought he was still getting the error.

but it seems that you have taken care of Tom.

**The Hobo** · Jul 29th, 2002, 11:52 AM

Originally posted by phpman

well I thought he was still getting the error.

but it seems that you have taken care of Tom.

It's a very common error, that's why we didn't need to see code.

**phpman** · Jul 29th, 2002, 11:59 AM

really, so where was the error?

and tell me if this will produce a header error

PHP Code:


<?php

  $var = "hello";

?>





<?php

  setcookie("","","","","");

?>

that is one file by the way.

**cpradio** · Jul 29th, 2002, 11:59 AM

I love the redundant questions in life

**cpradio** · Jul 29th, 2002, 12:06 PM

Originally posted by phpman
really, so where was the error?

and tell me if this will produce a header error

PHP Code:

<?php $var = "hello"; ?> <?php setcookie("","","","",""); ?>

that is one file by the way.

This will produce an error, as white space has been created above the setcookie function. PHP only ignores white space inbetween the <?php ?> tagsand this white space was created by the file/html/whatever. (sounds redundant doesn't it

)

Now you can use either of the below instead of what is written above:

PHP Code:


<?php

  $var = "hello";

?>

<?php

  setcookie("","","","","");

?>

PHP Code:


<?php

  $var = "hello";















  setcookie("","","","","");

?>

**phpman** · Jul 29th, 2002, 12:14 PM

yes, you are correct Matt, but I was just curious as to how you knew it was something being echoed or just white space. if he was new to this then he would say there is nothing that is being echoed. but it seems that he was talking to somebody behind the scences.

yes it would produce an error and no newbie would now that.

even if he included a file before the setcookie like the code I gave it would produce the same error. that is why I said to show us the code.

in /home/tom/sviesoft/login/login.php on line 1000099238

100009238+ lines of code?????????? yeah right. I never seen file with that many lines of code.

**cpradio** · Jul 29th, 2002, 12:18 PM

point made

**The Hobo** · Jul 29th, 2002, 12:48 PM

I just thought it'd be easier to tell him what was up, then have him post code and point out the individual mistakes.

And just incase anyone cares, it's raining all around my house except in my back yard. Imma go watch it.

**prog_tom** · Jul 29th, 2002, 04:40 PM

100009238+ lines of code?????????? yeah right. I never seen file with that many lines of code.

That's because most low-level never seen it. Thus you may be one of them.

this cookie **** is driving me insane.

check out:
http://www.sviesoft.com/beta/1.php

PHP Code:


<?setcookie("yonghuming","prog_tom",NULL,"","sviesoft.com");

if(isset($yonghuming)){print $yonghuming;}?>

everytime I make expiration to time()+600, it just doesn't work, seems like PHP on my server either didn't set up correctly, or it doesn't support time(). It doesn't support $_COOKIES or other crap either, if I use $_COOKIES it gives me $T_VAR or some crap error.

**phpman** · Jul 29th, 2002, 04:54 PM

That's because most low-level never seen it. Thus you may be one of them.

bull**** Tom, don't give me that. even professional programmers don't have pages that long. and you call yourself a high-level programmer? you can't even get a cookie right......

I can almost bet you didn't write it either. let me see the file if it has that many lines in it.....

<?
setcookie("yonghuming","prog_tom", time() +600,"","sviesoft.com");
if(isset($yonghuming)){print $yonghuming;}?>

**prog_tom** · Jul 29th, 2002, 05:02 PM

Did I mention anything as a programmer myself? I wish, someday, to become one, but first I gotta learn from you.

PHP Code:


setcookie("yonghuming","prog_tom",0,"/","",0);

that seems working, but how long do 0 last? forever?

**phpman** · Jul 29th, 2002, 05:06 PM

no cookie can last forever. al you can do is make it last a year I think.

I think if you set it at 0 then it will go away when the browser is closed.

just set time() +43200

setcookie("yonghuming","prog_tom", time() +43200 );

**The Hobo** · Jul 29th, 2002, 05:33 PM

Originally posted by phpman
no cookie can last forever. al you can do is make it last a year I think.

I think if you set it at 0 then it will go away when the browser is closed.

just set time() +43200

setcookie("yonghuming","prog_tom", time() +43200 );

Yeah, cookies always expire, although I think you can make them longer than a year. And yes, it'll expire when the browser closes if it's set to 0.

My suggestion: set it for a year and renew it each time the user comes to the page.

**The Hobo** · Jul 29th, 2002, 05:37 PM

Originally posted by phpman

bull**** Tom, don't give me that. even professional programmers don't have pages that long.

I have to agree there. 100 million lines (100,009,238) of code is way, way beyond absurd...

**prog_tom** · Jul 30th, 2002, 05:00 PM

the file is nearly 1.3 TB.

**phpman** · Jul 30th, 2002, 05:03 PM

yeah and my dick is 5 miles long,

give me a break Tom

**The Hobo** · Jul 30th, 2002, 05:03 PM

Originally posted by prog_tom
the file is nearly 1.3 TB.

hmm...how do you fit that on a 120 gig hard drive?

**Gimlin** · Jul 30th, 2002, 06:35 PM

Yah? and what does it do Tom

**The Hobo** · Jul 30th, 2002, 07:22 PM

Originally posted by prog_tom
Warning: Cannot add header information - headers already sent by (output started at /home/tom/sviesoft/login/login.php:8) in /home/tom/sviesoft/login/login.php on line 1000099238

what is wrong?

hmmm...does tommy lie alot?

**ubunreal69** · Jul 30th, 2002, 07:22 PM

prog_tom, are you sure the server even supports cookies ? try a simple bit of code to just test it first.

simple test:

PHP Code:


setcookie("greeting","elooo", time()+3600);

IF (isset($_COOKIE['greeting']))

{ECHO 'cookie value is', $_COOKIE['greeting'];}

**Gimlin** · Jul 30th, 2002, 08:31 PM

Originally posted by The Hobo

hmmm...does tommy lie alot?

Good catch

**The Hobo** · Jul 30th, 2002, 09:38 PM

Originally posted by ubunreal69
prog_tom, are you sure the server even supports cookies ? try a simple bit of code to just test it first.

simple test:

PHP Code:

setcookie("greeting","elooo", time()+3600); IF (isset($_COOKIE['greeting'])) {ECHO 'cookie value is', $_COOKIE['greeting'];}

That won't work. Cookies aren't accessable until it is reloaded. Cookies won't appear until the script that set them is refreshed.

**ubunreal69** · Jul 31st, 2002, 04:49 AM

Originally posted by The Hobo
That won't work. Cookies aren't accessable until it is reloaded. Cookies won't appear until the script that set them is refreshed.

let me re-phrase it then

put:

PHP Code:


setcookie("greeting","elooo", time()+3600);

IF (isset($_COOKIE['greeting']))

{ECHO 'cookie value is', $_COOKIE['greeting'];}

run the page, then refresh it.

**trojjer** · Jul 31st, 2002, 06:09 PM

Yo! My first post...

Er, don't mean to critiscise anyone, but who cares about not putting each statement on a new line?!

I certaintly don't - that's what the ";" closing character is for!!!

And jeez, all that unnecessary whitespace! Pah...

You can make pages verbose, without using stupid format conventions that take up space! After all, why format the formatting code...? (such as HTML - but applies to PHP,VBScript,Javascript, etc.)

P.S: A 1.3+ Terrabyte script?! I wonder how long that imaginary file would take to execute on the server... lol yeah, right...

**The Hobo** · Jul 31st, 2002, 08:29 PM

Originally posted by trojjer
Er, don't mean to critiscise anyone, but who cares about not putting each statement on a new line?!

Employers? I know people who have been told they didn't get the job because of things like that. The employer looks at your work and see's a confusing mess, he's going to hand you a candy cane and tell you to go home.

So if you every want a job, you should care. If you're just going to make piss-ass programs for the rest of your life, feel free.

**phpman** · Jul 31st, 2002, 09:01 PM

Originally posted by trojjer
Yo! My first post...

Er, don't mean to critiscise anyone, but who cares about not putting each statement on a new line?!

I certaintly don't - that's what the ";" closing character is for!!!

And jeez, all that unnecessary whitespace! Pah...

You can make pages verbose, without using stupid format conventions that take up space! After all, why format the formatting code...? (such as HTML - but applies to PHP,VBScript,Javascript, etc.)

dude I don't believe you just said that. I would hate to see your code.

fjdksa fl;sdlthisjg dfksajf dkisdfjska l;fjd sakl;onej gdsfkalf;jdksla ;longfj dskalfj;d skal;linefjdksafj dskla;

can you tell what that line just said? no I bet you can't, give me a break will ya. it's only human to make it so it is readable.

suppose you made that 1.3 TB file for Tom huh?

**carp** · Jul 31st, 2002, 09:38 PM

That script would take more than 24 hours to lead from a server, It'll probablt make the server crash with that many lines and we all know you're lieing so shut the **** up and leard how to set a cookie!!! END OF DISCUSSION!, PS. You're a retard

**prog_tom** · Aug 2nd, 2002, 10:07 PM

heh, it worked

wow, 5 miles. we can walk on it.
i love to write code in one line or 2 with no spaces, ; between them, that way, no one would peek it.

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