Cannot modify header information - headers already sent by (output ...

274 100+

I get following error on page :
Cannot modify header information - headers already sent by (output started at C:\xampp\htdocs\desiorb\411.php:9) in C:\xampp\htdocs\desiorb\411.php on line 21
when I set a cookie on first page. Please help me fix it.
here is code fot both pages
411.php

Expand|Select|Wrap|Line Numbers

 <html>

<body>

<form action="411process.php" method="post">

    Email adddress: <input type="text" name="email" />

    Cell #: <input type="text" name="cell" />

    <input type="Submit" value = "Subscribe"/>

    <input type="checkbox" name="option_SportsPicks" value="SportsPicks"  checked> SportsPicks

    <input type="checkbox" name="option_StockPicks" value="StockPicks" checked > Stock Picks

    <input type="checkbox" name="option_Wedding" value="Wedding" checked> Wedding

    <input type="checkbox" name="option_Tech" value="Tech" checked> Tech. 

    <input type="checkbox" name="option_Fashion" value="Fashion" checked> Fashion 

    <input type="checkbox" name="option_Events" value="Events" checked> Events 

    <input type="checkbox" name="option_Entertainment" value="Entertainment" checked> Entertainment

    <input type="checkbox" name="option_RealEstate" value="RealEstate" checked> Real Estate 

    <input type="checkbox" name="option_Auto" value="Auto" checked> Auto 

    <input type="checkbox" name="option_Employment" value="Employment" checked> Employment 

    <input type="checkbox" name="option_Cuisine" value="Cuisine" checked> Cuisine <br><br><br>

</form>

Sports

<a href="411Directory.php" type="submit"><img src="buttons/sportspicks.png" alt="Sports Picks" name="sportspicks" id="sportspicks"  onclick="411Process.php" border="0" ></a>

<?php setcookie("id","sportspicks",time()+3600);?>

Auto

<a href="411Directory.php"><img src="buttons/auto.png" alt="auto" name="auto" id="Auto" border="0" ></a><br><br>

Stock Picks

<a href="411Directory.php"><img src="buttons/stockpicks.png" alt="stockpicks" name="stockpicks" id="stockpicks" border="0"></a>

Events

<a href="411Directory.php"><img src="buttons/events.png" alt="events" name="events" id="events" border="0"></a><br><br>

Entertainment

<a href="411Directory.php"><img src="buttons/entertainment.png" alt="entertainment" name="entertainment" id="entertainment" border="0"></a>

Wedding

<a href="411Directory.php"><img src="buttons/wedding.png" alt="wedding" name="wedding" id="wedding" border="0" ></a><br><br>

Fashion

<a href="411Directory.php"><img src="buttons/fashion.png" alt="fashion" name="fashion" id="fashion" border="0" ></a>

Cuisine

<a href="411Directory.php"><img src="buttons/cuisine.png" alt="cuisine" name="cuisine" id="cuisine" border="0"></a><br><br>

Real Estate

<a href="411Directory.php"><img src="buttons/realestate.png" alt="realestate" name="realestate" id="realestate" border="0"></a>

Tech

<a href="411Directory.php"><img src="buttons/tech.png" alt="tech" name="tech" id="tech" border="0"></a><br><br>

Employment

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="lastpage.htm"><img src="buttons/employment.png" alt="employment" name="employment" id="employment" border="0"></a>

</body>

</html>

411Directory.php

Expand|Select|Wrap|Line Numbers

 <html>

<body>

<?php

$id=$_COOKIE["id"];

// Print a cookie

echo $_COOKIE["id"];

// A way to view all cookies

print_r($_COOKIE);

?>

</body>

</html>

this is my second day that I am playing with PHP but ths error screwedup my mind.
Please tell what I should do?
thanks in advance.

Jul 16 '08 #1

Subscribe Post Reply

2219

Atli

5,058

Expert 4TB

When you set a cookie PHP must add headers to the HTTP Response.
The problem is that when you start printing content, even it that content is just a single white space before the <?php tag, the headers are sent, at which time PHP is unable to add new headers.

So, that means you must set any headers, including cookies, before you send anything else.

If you absolutely must send some content before setting the cookie, you can use Output buffering to delay the output until you chose to send it.

Somewhat like:

Expand|Select|Wrap|Line Numbers

 
<?php

ob_start(); // Start buffering output
 
echo "This stuff just had to be sent before the cookie!";

setcookie(...);
 
ob_end_flush(); // Release the output to the response

?>

Jul 16 '08 #2

creative1

274

100+

Thanks a lot . I am not sending data using cookies any more but it dis help understanding what the reason and solution of the problem is. I went through many solution but I found it useful.
Thanks again

Jul 16 '08 #3

by: Phyzlo | last post by:

Hello, I've recently started learning PHP and have a question. I tried running below script which can be found at http://se2.php.net/manual/sv/function.setcookie.php but I keep getting this...

PHP

Cannot use mail() in IE, only works in a debugger--help

by: baustin75 | last post by:

Posted: Mon Oct 03, 2005 1:41 pm Post subject: cannot mail() in ie only when debugging in php designer 2005 -------------------------------------------------------------------------------- ...

PHP

"Cannot modify header information" with large HTML FORM options

by: Chris Robb | last post by:

I'm having some really odd behavior with a PHP script. I have it populating an HTML select form with a for loop. When I try the years 2006 to 1900. I get the following error: PHP Warning: ...

PHP

Cannot modify header information - headers already sent by

by: J Huntley Palmer | last post by:

I am getting this error: Cannot modify header information - headers already sent by when I issue a header ("Location: http://www.foobar.com"); How can I redirect the user to such a site...

PHP

how do I fix this " Warning: session_start(): Cannot send session cache limiter"

by: lawrence k | last post by:

How can I find out where my script is outputting to the screen for the first time? My error logs are full of stuff like this: PHP Warning: session_start(): Cannot send session cache...

PHP

Warning:Cannot modify header information...

by: mcserret | last post by:

I know this is a recurring problem that has been addressed here before, but even after reading all that has gone before, I am still stumped. I have a form that is designed to send data to a PHP...

PHP

Warning: Cannot modify header information - headers already sent

by: smartic | last post by:

I'm having problem with header redirection that is my code: <?php header("location:Redirecting.php"); exit; ?> //Then the HTML It give me an error

PHP

Cannot modify header information - headers already sent by (------)

by: TechnoAtif | last post by:

Hi All. I have got problem with the header. If i run my php script in the local host it runs perfectly but if i do the same on net after loading it via ftp. it gives following error: The code...

PHP

Error: Cannot modify header information - headers already sent

by: pks83 | last post by:

Hello I am also facing this problem when i amtrying to send additional header information. Warning: Cannot modify header information - headers already sent by (output started at header.php:96)...

PHP

How to turn on java script in a villaon keypad mobile phone

by: Charles Arthur | last post by:

How do i turn on java script on a villaon, callus and itel keypad mobile phone

Java

Migrating Website to Cloud - Emmanuel Katto

by: emmanuelkatto | last post by:

Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel

General

How to build RAID in BIOS?

by: Hystou | last post by:

There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...

Computer Hardware

What is ONU?

by: marktang | last post by:

ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...

General

Changing the language in Windows 10

by: Hystou | last post by:

Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can...

Windows Server

Maximizing Business Potential: The Nexus of Website Design and Digital Marketing

by: jinu1996 | last post by:

In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...

Online Marketing

The easy way to turn off automatic updates for Windows 10/11

by: Hystou | last post by:

Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows...

Windows Server

Discussion: How does Zigbee compare with other wireless protocols in smart home applications?

by: tracyyun | last post by:

Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each...

General

Access Europe - Using VBA to create a class based on a table - Wed 1 May

by: isladogs | last post by:

The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new...

Microsoft Access / VBA

Cannot modify header information - headers already sent by (output ...

Similar topics