"Warning:Cannot modify header information -" Error
This is a discussion on "Warning:Cannot modify header information -" Error within the PHP General forums, part of the PHP Programming Forums category; Hi All ! I am having some problem with the code below. Everytime I run it it gives me the following ...
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07-15-2008
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"Warning:Cannot modify header information -" Error
Hi All !
I am having some problem with the code below. Everytime I run it it gives me the following error: Warning: Cannot modify header information - headers already sent by (output started at C:\xampp\htdocs\practice.com\displayUserData.php:7 ) in C:\xampp\htdocs\practice.com\displayUserData.php on line 12 The source code of the page is as follows: <!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"> <head> <title> new document </title> </head> <body> <?php $textColor = $_POST["TextColor"]; $boldText = $_POST["boldText"]; $userComments = stripslashes($_POST['userComments']); if(isset($_POST["saveInfo"])) { setcookie("userData",$userComments,time()+60*60*24 *30); } if(isset($_POST['boldText'])) { echo "<b>"; } echo "<font color='$textColor'>"; echo $userComments; echo "</font>"; if (isset($_POST["boldText"])) { Â*Â*Â* echo "</b>"; } ?></body> </html> If I comment the setcookie() part, it works fine.. I looked up for some online help n most of them say I might have a whitespace near the line number mentioned in the warning message. But I don't find any.. Please help ! Did you know? You can CHAT without downloading messenger. Goto http://in.messenger.yahoo.com/webmessengerpromo.php/ 
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07-15-2008
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Re: [PHP] "Warning:Cannot modify header information -" Error
On Tue, Jul 15, 2008 at 11:51 AM, Tiji varghese <tijivarghese@yahoo.co.in>
wrote: > Hi All ! > I am having some problem with the code below. Everytime I run it it gives > me the following error: > Warning: Cannot modify header information - headers already sent > by (output started at > C:\xampp\htdocs\practice.com\displayUserData.php:7 ) in C:\xampp\htdocs\ > practice.com\displayUserData.php on line 12 > > The source code of the page is as follows: > > <!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"> > <head> > <title> new document </title> > </head> > <body> > <?php $textColor = $_POST["TextColor"]; > $boldText = $_POST["boldText"]; > $userComments = stripslashes($_POST['userComments']); > if(isset($_POST["saveInfo"])) > { > setcookie("userData",$userComments,time()+60*60*24 *30); > } > if(isset($_POST['boldText'])) > { > echo "<b>"; > } > echo "<font color='$textColor'>"; > echo $userComments; > echo "</font>"; > if (isset($_POST["boldText"])) > { > echo "</b>"; > } > ?></body> > </html> > > If I comment the setcookie() part, it works fine.. I looked up for some > online help n most of them say I might have a whitespace near the line > number mentioned in the warning message. But I don't find any.. Please help > ! > > > > Did you know? You can CHAT without downloading messenger. Go to > http://in.messenger.yahoo.com/webmessengerpromo.php/ The setcookie line needs to come before you output anything. Move your html output at the top past it, and you should be good. -- -Dan Joseph www.canishosting.com - Plans start @ $1.99/month. "Build a man a fire, and he will be warm for the rest of the day. Light a man on fire, and will be warm for the rest of his life."
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07-15-2008
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Re: [PHP] "Warning:Cannot modify header information -" Error
On Tue, Jul 15, 2008 at 11:51 AM, Tiji varghese
<tijivarghese@yahoo.co.in> wrote: > Hi All ! > I am having some problem with the code below. Everytime I run it it gives me the following error: > Warning: Cannot modify header information - headers already sent > by (output started at > C:\xampp\htdocs\practice.com\displayUserData.php:7 ) in C:\xampp\htdocs\practice.com\displayUserData.php on line 12 This message means that something was sent before line 12. In your case, the HTML. All things that have to do with headers must be before ANYTHING is sent to the browser. If you need to have the HTML before a setcookie(), header(), or another header-based PHP action, check into ob_start() and the other output-buffering functions PHP has available. -- </Daniel P. Brown> Dedicated Servers - Intel 2.4GHz w/2TB bandwidth/mo. starting at just $59.99/mo. with no contract! Dedicated servers, VPS, and hosting from $2.50/mo.
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