CakePHP Error: Unable to configure the session, setting session.auto_start failed

I'm getting this error:

Error: [CakeSessionException] Unable to configure the session, setting session.auto_start failed.

I'm using Cakephp 2.2.4.

EDIT

It seems this guy had the same issue: Cakephp Session error on live site and using this

if(!isset($_SESSION)) session_start();

inside beforefilter method of AppController fix the error.

So my question is: why this happened? Everything was working fine and then suddendly this error appeared. Additionally I've realized that the folder app/tmp/sessions is empty and I have configured the session to be handled by Cake (in Config/core.php).

In PHP version 5.4.19 - developers closed the ability to set session.auto_start option from user script.

CakePHP removed this option from default session configuration only in 2.4.0 version.

So you have 3 main option: upgrade CakePHP, downgrade PHP, or use standard php session.

Simon East

Andriy Struk's answer is correct. He said: So you have 3 main options: upgrade CakePHP, downgrade PHP, or use standard PHP sessions.

But there's a 4th option, you can simply comment out a single line in /lib/Cake/Model/Datasource/CakeSession.php (around line 557):

// 'session.auto_start' => 0,

That stops Cake calling ini_set() on that setting, and prevents the fatal error.

BadHorsie

As Andriy's answer says, you should upgrade CakePHP or downgrade PHP. However, if you don't want to or don't have the option to, you need to reconfigure your Cake session so that it uses standard PHP sessions rather than Cake's session.

app/Config/core.php

Configure::write('Session', array(
    'defaults' => 'cake', // You need to change the value of this to 'php'
    'timeout' => 120,
    'cookieTimeout' => 20160,
    'checkAgent' => false 
));

haipt

In your php.ini file, try setting session.auto_start to 1.

as I do not have enough reputation to comment, I'm adding the following answer in addition to Simon's one:

to get it working, I had to comment out all three occurrences of 'session.auto_start' => 0 (around and after line 557 in CakeSession.php)

For details, see the following patch of the CakePHP team: https://github.com/cakephp/cakephp/commit/faa2cbd3c3fc1bbf83064727847789123110b8e3#diff-bd8dc176fa0f41743dbaafa75f77b5ae

来源：https://stackoverflow.com/questions/19004460/cakephp-error-unable-to-configure-the-session-setting-session-auto-start-faile

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