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Cannot modify header information
in PHP Coding Help
Posted
I keep getting this error Warning: Cannot modify header information - headers already sent by (output started at /home2/orangejuicea/public_html/coffeetable/logout.php:3) in /home2/orangejuicea/public_html/coffeetable/helpers/system_helper.php on line 24
I believe that something is wrong between tehse two files. Is there anyone who can help me. Any advice you would give would be greatly appreciated.
SYSTEM_HELPER.PHP
<?php
/*
* Redirect To Page
*/
function redirect($page = FALSE, $message = NULL, $message_type = NULL) {
if (is_string ($page)) {
$location = $page;
} else {
$location = $_SERVER ['SCRIPT_NAME'];
}
//Check For Message
if($message != NULL){
//Set Message
$_SESSION['message'] = $message;
}
//Check For Type
if($message_type != NULL){
//Set Message Type
$_SESSION['message_type'] = $message_type;
}
//Redirect
header ('Location: '.$location);
exit;
}
/*
* Display Message
*/
function displayMessage(){
if(!empty($_SESSION['message'])) {
//Assign Message Var
$message = $_SESSION['message'];
if(!empty($_SESSION['message_type'])) {
//Assign Type Var
$message_type = $_SESSION['message_type'];
//Create Output
if ($message_type == 'error') {
echo '<div class="alert alert-danger">' . $message . '</div>';
} else {
echo '<div class="alert alert-success">' . $message . '</div>';
}
}
//Unset Message
unset($_SESSION['message'] );
unset($_SESSION['message_type'] );
} else {
echo '';
}
}
/*
* Check If User Is Logged In
*/
function isLoggedIn(){
if(isset($_SESSION['is_logged_in'])){
return true;
} else {
return false;
}
}
/*
* Get Logged In User Info
*/
function getUser(){
$userArray = array();
$userArray['user_id'] = $_SESSION['user_id'];
$userArray['username'] = $_SESSION['username'];
$userArray['name'] = $_SESSION['name'];
return $userArray;
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
HEADER.PHP
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Welcome To The Coffee Table</title>
<!-- Bootstrap core CSS -->
<link href="<?php echo BASE_URI; ?>templates/css/bootstrap.css" rel="stylesheet">
<!-- Custom styles for this template -->
<link href="<?php echo BASE_URI; ?>templates/css/custom.css" rel="stylesheet">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="<?php echo BASE_URI; ?>templates/js/bootstrap.js"></script>
<script src="<?php echo BASE_URI; ?>templates/js/ckeditor/ckeditor.js"></script>
<?php
//Check if title is set, if not assign it
if(!isset($title)){
$title = SITE_TITLE;
}
?>
</head>
<body>
<div class="navbar navbar-inverse navbar-fixed-top" role="navigation">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="index.php">The Coffee Table</a>
</div>
<div class="collapse navbar-collapse">
<ul class="nav navbar-nav navbar-right">
<li class="active"><a href="index.php">Home</a></li>
<?php if(!isLoggedIn()) : ?>
<li><a href="register.php">Create An Account</a></li>
<?php else : ?>
<li><a href="create.php">Create Topic</a></li>
<?php endif; ?>
</ul>
</div><!--/.nav-collapse -->
</div>
</div>
<div class="container">
<div class="row">
<div class="col-md-8">
<div class="main-col">
<div class="block">
<h1 class="pull-left"><?php echo $title; ?></h1>
<h4 class="pull-right">A simple PHP forum engine</h4>
<div class="clearfix"></div>
<hr>
<?php displayMessage(); ?>