Multi tool use

Session issue with codeigniter (CI)

I am getting php session error on my live developed using codeigniter

A PHP Error was encountered

Severity: Warning

Message: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /home/userts4m/public_html/development/relatioweb/admin/index.php:1)

Filename: Session/Session.php

Line Number: 140

Backtrace:

File: /home/userts4m/public_html/development/relatioweb/application/admin/controllers/User.php
Line: 9
Function: __construct

File: /home/userts4m/public_html/development/relatioweb/admin/index.php
Line: 293
Function: require_once


Working at localhost fine. But when i uploded at server we are facing this issue.

What should i do ...

/home/userts4m/public_html/development/relatioweb/admin/index.php

User.php

7 Answers
7

These both solutions work for me try it. May be it 'll work for you.

Some times this error occurred due to the wrong configuration Of framework,
go to the folder applications/config and open up the config.php write this in the starting of file like this

<?php
if (!defined('BASEPATH')) exit('No direct script access allowed');
ob_start();
/* Remaining Part Of your file
.........................................
*/


Another solution is to write ob_start() in the constructor of the class
like this:

<?php
if (!defined('BASEPATH')) exit('No direct script access allowed');
class Your_Controller extends CI_Controller {
public function __construct() {
parent::__construct();
ob_start();
}
}


This usually means that somewhere you've already got a session_start() and a second one will throw this error. Remove the redundant one.

session_start()

the problem is well explained here How to fix "Headers already sent" error in PHP

In order to solve this I needed to implement
the concept of output-buffering (Output buffering is a mechanism in which instead of sending a response immediately to browser we buffer it somewhere so that we can send it at once when whole content is ready ).
So as the error indicate the problem occurs in index.php
what I did I inserted

ob_start();


at the beginning of index.php

Try using @session_start(); It will bypass the error and session will be start.
Please note @session_start() is your first line of the code. Do not execute or echo anything before it.

As per @kunal and @dale suggestion there was a space in /home/userts4m/public_html/development/relatioweb/admin/index.php

@kunal

@dale

/home/userts4m/public_html/development/relatioweb/admin/index.php

In this file may have blank space before start PHP tag.

Check the controller file, if there are spaces before the php tag remove it.

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