ActaNonVerba1 Posted January 6, 2011 Share Posted January 6, 2011 Hey guys, i always get the error: Warning: Cannot modify header information - headers already sent by (output started at /home/worldw44/public_html/Newsletter/Admin/Admin.php:1) in /home/worldw44/public_html/Newsletter/Admin/Admin.php on line 6 when im tyring to run: <?php if(isset($_SESSION['adminlogin'])) { $run=yes; } else { header( 'Location: http://www.worldwidelighthouses.com/Newsletter/Admin/Log-In.php'); }?> <!DOCTYPE HTML> <html lang="en-GB"> <head> <meta charset="utf-8"> <!--Search Engine Meta Tags--> <meta name="author" content="Worldwide Lighthouses"> <meta name="keywords" content="Lighthouses,Lightships,Trinity House,Fog Signals,Fog Horns,Fresnel"> <meta name="description" content="Worldwide Lighthouses is the number 1 source of information, pictures and videos on the Subject of Lighthouses and Lightships"> <!--Stylesheets/Javascript--> <link rel="stylesheet" href="../../Page-Layout.css" media="screen and (min-width: 481px)"> <link rel="stylesheet" href="../../Mobile-Page-Layout.css" media="only screen and (max-width:480px)"> <!--Mobile Browser Support--> <meta name="viewport" content="width=320; initial-scale=1.0; maximum-scale=1.0; user-scalable=0;"> <!--IE Support--> <!--[if lt IE 9]><script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script> <link rel="stylesheet" href="../Page-Layout.css"><![endif]--> <meta name="application-name" content="Worldwide Lighthouses"> <meta name="msapplication-starturl" content="http://worldwidelighthouses.com/"> <meta name="msapplication-tooltip" content="Worldwide Lighthouses: Your number one source of Lighthouse Information, Videos and Pictures"> <meta name="msapplication-task" content="name=Lighthouses;action-uri=http://worldwidelighthouses.com/Lighthouses.php;icon-uri=http://worldwidelighthouses.com/IE9/Lighthouses.ico"> <meta name="msapplication-task" content="name=Lightships;action-uri=http://worldwidelighthouses.com/Lightships.php;icon-uri=http://worldwidelighthouses.com/IE9/Lightships.ico"> <meta name="msapplication-task" content="name=Fog Signals;action-uri=http://worldwidelighthouses.com/Fog-Signals.php;icon-uri=http://worldwidelighthouses.com/IE9/Fog-Signals.ico"> <meta name="msapplication-task" content="name=Glossary;action-uri=http://worldwidelighthouses.com/Glossary.php;icon-uri=http://worldwidelighthouses.com/IE9/Glossary.ico"> <title>Mailing List Administration | Worldwide Lighthouses</title> </head> <body> <header> <h1 id="WWLH">Worldwide Lighthouses</h1> <form method="get" action="http://www.worldwidelighthouses.com/Search/search.php" id="Search-Box"> <input type="search" placeholder="Search Worldwide Lighthouses" name="query" id="query" size="30" value="" autocomplete="off"> <input type="submit" value="Search"> <input type="hidden" name="search" value="1"> </form> </header> <nav> <ul id="Nav"> <li class="MenuButton" id="Index"><a href="../Index.php"><p class="Nav">Home</p></a></li> <li class="MenuButton" id="Lighthouses"><a href="../Lighthouses.php"><p class="Nav">Lighthouses</p></a></li> <li class="MenuButton" id="Lightships"><a href="../Lightships.php"><p class="Nav">Lightships</p></a></li> <li class="MenuButton" id="FogSignals"><a href="../Fog-Signals.php"><p class="Nav">Fog Signals</p></a></li> <li class="MenuButton" id="Daymarks"><a href="../Daymarks.php"><p class="Nav">Daymarks</p></a></li> <li class="MenuButton" id="Buoys"><a href="../Buoys.php"><p class="Nav">Buoys</p></a></li> <li id="MenuButtonLast"><a href="../Glossary.php"><p class="Nav">Glossary</p></a></li> </ul> </nav> <article> <h1 class="Title">Contact Admin Centre</h1> <div class="Textbox"> <div id="Social"> <a href="http://twitter.com/share" class="twitter-share-button" data-count="horizontal" data-via="WWlighthouses">Tweet</a><script type="text/javascript" src="http://platform.twitter.com/widgets.js"></script> <object id="Facebook" data="http://www.facebook.com/plugins/like.php?href=http%3A%2F%2Fworldwidelighthouses.com/&layout=button_count&show_faces=false&width=450&action=like&colorscheme=light&height=21"></object> </div> </div> </article> <footer> <ul> <li><a href="../About.php">About</a></li> <li><a href="../Contact-us.php">Contact</a></li> <li><a href="../Use-Our-Media.php">Use our media</a></li> <li><a href="../Search/search.php">Search</a></li> <li><a href="../Social-Networking.php">Social</a></li> <li><a href="#Top">Back to top</a></li> </ul> <br> <br> © Worldwide Lighthouses <?php echo date("Y"); ?> </footer> </body> Cany anyone offer some suggestions as to why? Note i have no ability to change phpconfig. Quote Link to comment Share on other sites More sharing options...
PFMaBiSmAd Posted January 6, 2011 Share Posted January 6, 2011 The header() redirect is dependent on the same condition that the session_start() is, that no output has been sent to the browser before the header. output started at /home/worldw44/public_html/Newsletter/Admin/Admin.php:1 (line 1) Please read the following sticky thread (especially the last post about the BOM characters) - http://www.phpfreaks.com/forums/php-coding-help/header-errors-read-here-before-posting-them/ Edit: You also need an exit; statement after your header() redirect to prevent access to the remainder of the 'protected' code on your page. Anyone can currently still access your protected pages by simply ignoring the header() redirect. Quote Link to comment Share on other sites More sharing options...
ActaNonVerba1 Posted January 6, 2011 Author Share Posted January 6, 2011 How embarrassing, i just had some white-space before my <?php that i didn't consciously see. Thanks Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.