CodeIgniter Cannot modify header information
Question
Hi Currently Im still Learning CodeIgniter. Im trying to use its session and enabled the session in autoload file
First the file structure of files is like this/
I structure my files like this. all templates will go in views/index.php
my problem is I get this error Cannot modify header information
I have a controller Home
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Home extends CI_Controller{
public function index()
{
$view['title'] = 'Welcome';
$data['data'] = $view;
$data['content'] = 'home';
$this->load->view('index',$data);
}
}
My views is something like this
views/index.php
<!DOCTYPE html>
<html lang="en">
<?php
//echo ("Welcome User: " . $datas["user_id"]);
$this->load->view('header',$data);
$this->load->view('template/' . $content);
$this->load->view('footer',$data);
?>
</html>
views/header.php
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="">
<meta name="author" content="">
<title><?=$title?></title>
<link href="<?=ASSETS_PATH?>css/bootstrap.css" rel="stylesheet">
<link href="<?=ASSETS_PATH?>css/custom.css" rel="stylesheet">
</head>
<body oncontextmenu="return false">
views/footer.php
<script src="https://code.jquery.com/jquery-1.10.2.min.js"></script>
<script src="<?=ASSETS_PATH?>js/bootstrap.min.js"></script>
<script src="<?=ASSETS_PATH?>js/javascript.js"></script>
</body>
then my content
views/template/home.php
<div class="jumbotron mod-jumbotron">
<div class="jm-button" style="text-align:center;">
<h1>Welcome</h1>
</div>
</div>
I don't know why do i get that error session. Please hope you could help me. I didn't even set a session. I have just added it in auto load and don't know why i get that header problem. Is my file structure wrong?
A PHP Error was encountered
Severity: Warning
Message: Cannot modify header information - headers already sent by (output started at site/application/controllers/home.php:2)
Filename: libraries/Session.php
Line Number: 675
3 answers
solution1
1 ACCPTED 2014-01-09 15:53:16
You probably have a space before the opening <?php tag in your Home controller which is causing output.
// a space here is enough to cause output
<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
solution2
0 2014-01-09 13:43:30
在配置文件或自动加载文件上使用此行，或在index.php文件中添加此行可能会解决您的问题。
ob_start()
solution3
0 2014-01-09 13:54:59
You will have to put the loading of the pages in the controller and not in the views.
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Home extends CI_Controller{
public function index()
{
$data['title'] = 'Welcome';
$this->load->view('header',$data);
$this->load->view('index',$data);
$this->load->view('footer',$data);
}
}
The view is for display, and you control it using the controller.
<script src="<?= base_url(). 'js/javascript.js' ?>"></script>
<link href="<?=base_url(). 'css/custom.css'?>" rel="stylesheet">
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