[PHP] Re: : [PHP] header information problem
I would agree with Yangshiqi
yangshiqi [EMAIL PROTECTED] 12/18/04 1:41 PM
And if you have some special intent, you can use ob_start().
Best regards,
Yang Shiqi
--
: yangshiqi [mailto:[EMAIL PROTECTED]
: 20041218 19:36
: 'Ahmed Abdel-Aliem'; 'php-general@lists.php.net'
: : [PHP] header information problem
I don't understand why you want to include header.html before you redirect
the users to the login_success.php?
By the way, you 'd better to add mysql_escape_string() with the username and
password to ensure the security of your code. Coz we can't believe any
users' input from web. May be the sql injection with your site.
Just be careful.
Best regards,
Yang Shiqi
--
: Ahmed Abdel-Aliem [mailto:[EMAIL PROTECTED]
: 20041218 18:52
: php-general@lists.php.net
: [PHP] header information problem
Dear Groups members.
i am making a user protected page, the script works excellent on my
local server, but online it gives me this error :
Warning: Cannot modify header information - headers already sent by
(output started at
/home/me2resh/public_html/apex/upload/header.html:10) in
/home/me2resh/public_html/apex/upload/upload.php on line 33
the script of the page is
?
if (!isset($ID)){
include 'header.html';
echo No ID is Set.brYou Got To This Page By Mistake;
include 'footer.html';
}else{
session_start();
include 'db.php';
include 'header.html';
$username = $_POST['username'];
$password = $_POST['password'];
if((!$username) || (!$password)){
echo Please enter ALL of the information! br /;
include 'login_form.html';
include 'footer.html';
exit();
}
$sql = mysql_query(SELECT * FROM user WHERE User_Login='$username'
AND User_Password='$password');
$login_check = mysql_num_rows($sql);
if($login_check 0){
session_register('ID');
$_SESSION['ID'] = $ID;
while($row = mysql_fetch_array($sql)){
foreach( $row AS $key = $val ){
$$key = stripslashes( $val );
}
session_register('User_First_Name');
$_SESSION['User_First_Name'] = $User_First_Name;
session_register('User_Last_Name');
$_SESSION['User_Last_Name'] = $User_Last_Name;
session_register('User_ID');
$_SESSION['User_ID'] = $User_ID;
header(Location: login_success.php);
}
}else{
include 'header.html';
echo You could not be logged in! Either the username and
password
do not match!br /
Please try again!br /;
include 'login_form.html';
include 'footer.html';
}
}
?
Can anyone help me with that problem please ?
--
Ahmed Abdel-Aliem
www.ApexScript.com
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Re: [PHP] header information problem
Ahmed Abdel-Aliem wrote: Dear Groups members. i am making a user protected page, the script works excellent on my local server, but online it gives me this error : Your local server has output_buffering turned ON in php.ini Your online server does not. Warning: Cannot modify header information - headers already sent by (output started at /home/me2resh/public_html/apex/upload/header.html:10) in /home/me2resh/public_html/apex/upload/upload.php on line 33 . . . include 'header.html'; . . . header(Location: login_success.php); First of all, you CANNOT do header once PHP has started sending HTML/content to the browser. Think (or learn) about how HTTP headers and content works, and it will be obvious why. Secondly, header(Location: ...) is BAD PROGRAMMING! The Location: header is part of the HTTP protocol to inform browsers when a document has *MOVED*. You have *not* moved your login script, nor your success page, nor any other on-line document. You are using (abusing) the Location: header as if it were a PHP programming construct such as 'if/else/while/include/echo/...' which it is not. Don't do that. You would be MUCH better off to just: include 'login_success.php'; here. You might need to re-structure a few things in your code, but it will be much cleaner in the end. In the short run, you can just turn on output buffering on your online server, and it will work -- In the long run, your code will be difficult to maintain, impossible to debug, and have weird logic until you re-structure it to deal with any kind of 'headers' first, then use include to pull in the correct html/php, and never, ever, ever, use header(Location: ) for anything except a document that has moved from one URL to another. -- Like Music? http://l-i-e.com/artists.htm -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] header information problem
In the else part, you have the possibility to echo to the screen and
later on, then header(Location: ...);
This is the bit which isn't allowed.
If you are doing header(Location: ...);, you are not allowed to echo
before it.
On 18 Dec 2004, at 11:52, Ahmed Abdel-Aliem wrote:
Dear Groups members.
i am making a user protected page, the script works excellent on my
local server, but online it gives me this error :
Warning: Cannot modify header information - headers already sent by
(output started at
/home/me2resh/public_html/apex/upload/header.html:10) in
/home/me2resh/public_html/apex/upload/upload.php on line 33
the script of the page is
?
if (!isset($ID)){
include 'header.html';
echo No ID is Set.brYou Got To This Page By Mistake;
include 'footer.html';
}else{
session_start();
include 'db.php';
include 'header.html';
$username = $_POST['username'];
$password = $_POST['password'];
if((!$username) || (!$password)){
echo Please enter ALL of the information! br /;
include 'login_form.html';
include 'footer.html';
exit();
}
$sql = mysql_query(SELECT * FROM user WHERE User_Login='$username'
AND User_Password='$password');
$login_check = mysql_num_rows($sql);
if($login_check 0){
session_register('ID');
$_SESSION['ID'] = $ID;
while($row = mysql_fetch_array($sql)){
foreach( $row AS $key = $val ){
$$key = stripslashes( $val );
}
session_register('User_First_Name');
$_SESSION['User_First_Name'] = $User_First_Name;
session_register('User_Last_Name');
$_SESSION['User_Last_Name'] = $User_Last_Name;
session_register('User_ID');
$_SESSION['User_ID'] = $User_ID;
header(Location: login_success.php);
}
}else{
include 'header.html';
echo You could not be logged in! Either the username and
password
do not match!br /
Please try again!br /;
include 'login_form.html';
include 'footer.html';
}
}
?
Can anyone help me with that problem please ?
--
Ahmed Abdel-Aliem
www.ApexScript.com
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
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RE: [PHP] Header information ...
Hi Anders,
You can't send a header to the browser once output has been sent. The
header() function should be before any other output on your script. Further
more, because the script isn't terminated after the header() function, and
you usually do not want to continue running it, an exit() should directly
follow.
e.g.:
Header(Location: main.php);
exit();
Regards,
Daniel Kushner
_
Need hosting? http://thehostingcompany.us
-Original Message-
From: Anders Mellstrom [mailto:[EMAIL PROTECTED]]
Sent: Friday, January 10, 2003 11:18 AM
To: [EMAIL PROTECTED]
Subject: [PHP] Header information ...
Hello. I can't get this code to work. The error message I get is
that the header could be added, cause it has allready been sent.
What shalll I do to get it to work?
//Anders
html
head
title/title
meta http-equiv=Content-Type content=text/html; charset=iso-8859-1
script language=JavaScript
if ((navigator.appName == Netscape)
(parseInt(navigator.appVersion) 5))
{
window.alert(Upgrade version of NS.);
}
else
{
document.write(?php $i = 1 ?);
}
/script
link rel='stylesheet' href='stil.css' type='text/css'
/head
body
br
?php
if ($i == 1)
{
Header(location:main.php);
}
else
{
print(Byt webblauml;sare!);
}
?
/body
/html
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Re: [PHP] Header information ...
Should look like this:
Anders Mellström wrote:
Hello. I can't get this code to work. The error message I get is that the header could be added, cause it has allready been sent. What shalll I do to get it to work?
//Anders
?php
if ($i == 1)
{
Header(location:main.php);
exit;
}
else
{
//print(Byt webblauml;sare!); -- displayed later
}
?html
head
title/title
meta http-equiv=Content-Type content=text/html; charset=iso-8859-1
script language=JavaScript
if ((navigator.appName == Netscape) (parseInt(navigator.appVersion) 5))
{
window.alert(Upgrade version of NS.);
}
else
{
document.write(?php $i = 1 ?);
}
/script
link rel='stylesheet' href='stil.css' type='text/css'
/head
body
br
Byt webblauml;sare!
/body
/html
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Re: [PHP] Header Information for Formatting?
On Thursday 02 May 2002 21:05, Jay Blanchard wrote: G' morning! Can someone tell me where to find the various options for the Header function as it relates to M$ Excel? Yesterday, thanks to this list, we found a way to open a worksheet in the browser and display data retrieved from a database. The worksheet opens with no gridlines and displaying zero values, I would like to see gridlines and no zero values. Are there options that can be placed in the header function. I have looked at MSDN and did a Google search that did not reveal much of anything. Here is the header info being used... header(Content-Type: application/x-excel); header(Content-Disposition: inline; filename=\excel.xls\); header(Expires: 0); header(Cache-Control: must-revalidate, post-check=0, pre-check=0); M$ Excel is not a browser (not yet anyway, and hopefully it doesn't evolve into one), thus http headers are not pertinent to how Excel displays it's data. Try fiddling with Excel's display options. -- Jason Wong - Gremlins Associates - www.gremlins.com.hk Open Source Software Systems Integrators * Web Design Hosting * Internet Intranet Applications Development * /* marriage, n.: Convertible bonds. */ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
