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In the valid everything being outputted to the browser is outputted after the header declaration. In the invalids things are being outputted before the header declaration. If you provide your full code we can be more specific, you can censor out secure parts with '****'.
perhaps a little clarification on how webpages are served.
The headers come first in the server response. after they're done, there is a blank line, and then the content of the webpage follows (which the browser renders). For example:in this example, the last header is the content-type header. the blank line below signals the end of the headers, and the following line (in this case, with the doctype) is the first line of content.Code:HTTP/1.1 200 OK
Date: Mon, 23 May 2005 22:38:34 GMT
Server: Apache/1.3.3.7 (Unix) (Red-Hat/Linux)
Last-Modified: Wed, 08 Jan 2003 23:11:55 GMT
Etag: "3f80f-1b6-3e1cb03b"
Accept-Ranges: bytes
Content-Length: 438
Connection: close
Content-Type: text/html; charset=UTF-8
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" dir="ltr" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<meta name="generator" content="vBulletin 3.8.1" />
<meta name="keywords" content=" php cookies, dhtml, javascript, css, dynamic html, xml, html, php, cgi" />
<meta name="description" content="Page 2- php cookies PHP" />
<link rel="shortcut icon" href="favicon.ico" />
<!-- blah blah blah etc etc..........-->
once php outputs anything that is not a header (e.g., text, error messages, html markup, even whitespace or html comments), then the headers end on no more headers can be sent. When you try to use a function that sets headers (likeheader()orsetcookie()) after content has been output, you get the "...headers already sent" error, because you can't "back up" and serve another header after that section of the server response is complete.
I have a different question but on the same cookie. This code
I tried to set the timeout to 60 minutes. Did I get it right?PHP Code:<?php
$george = 60 * 60 + time();
setcookie('Authorization','no', $george);
?>
yup.
just think: seconds,minutes,hours,days, ...etcPHP Code:60 /*seconds*/ * 60 /*minutes*/ * 24 /*hours*/ * 365 /*days*/
I have 1 more question
for this code
it comes up with this errorPHP Code:<?php
if(isset($_COOKIE['Authorization']))
$cheese = $_POST['name'];
$inTwoMonths = 60 * 60 * 24 * 60 + time();
setcookie('lastVisit',$cheese, $inTwoMonths);
else
header('location: index.php');
?>
Parse error: syntax error, unexpected T_ELSE in /home1/keyboard/public_html/setcookie.php on line 6
I don't understand what i've done wrong any help would be appreciated
You need curly braces if your conditional is more than 1 line
This would also work.PHP Code:<?php
if(isset($_COOKIE['Authorization'])) {
$cheese = $_POST['name'];
$inTwoMonths = 60 * 60 * 24 * 60 + time();
setcookie('lastVisit',$cheese, $inTwoMonths);
} else
header('location: index.php');
?>
The curly braces aren't necessary if what the conditional controls is only one line.PHP Code:<?php
if(isset($_COOKIE['Authorization'])) {
$cheese = $_POST['name'];
$inTwoMonths = 60 * 60 * 24 * 60 + time();
setcookie('lastVisit',$cheese, $inTwoMonths);
} else {
header('location: index.php');
}
?>
Thanks, it now works perfectly. How can I set this thread to resolved
Go to your first post (http://www.dynamicdrive.com/forums/s...26&postcount=1), click edit, click go advanced, add the resolved prefix to the thread title, and you should be all set.
Still, I always use them (and recommend the same to everyone).Quote:
Originally Posted by bluewalrus
I clicked on the link but there is no edit option, there is for my other posts and yes, i am logged in.