Undefined variable SESSION

Question

I m getting E NOTICE errors in a core CakePHP file when it tries to reference a never-set or unset session  cake libs cake session php line 372    function read  name   null        if  is null  name             return  this- gt   returnSessionVars              if  empty  name             return false             result   Set  classicExtract   SESSION   name       I ve done a search through my code  in the app  directory  and I can t find references to   SESSION or session destroy   Am I missing anything   This error shows up when I try to run any unit tests   Is this   normal   I ve cleared out the cake  directory and replaced it with another one  same version  just to make sure that I hadn t inadvertently modified anything in the core files  but I still get the same error   I m not sure if this is just a flaw in the framework or something else   EDIT  Here are the results of the test run on the command line   Welcome to CakePHP v1 3 11 Console --------------------------------------------------------------- App   app Path   var www program app --------------------------------------------------------------- CakePHP Test Shell --------------------------------------------------------------- Running app case models owners equity E NOTICE  Undefined variable   SESSION in  var www program cake libs cake session php on line 372 E NOTICE  Undefined variable   SESSION in  var www program cake libs cake session php on line 372 ERROR- gt Unexpected PHP error  Undefined variable   SESSION  severity  E NOTICE  in   var www program cake libs cake session php line 372      in testGenerateOwnerWithdrawals     in BalanceTestCase     in  var www program app tests cases models owners equity test php  ERROR- gt Unexpected PHP error  Undefined variable   SESSION  severity  E NOTICE  in   var www program cake libs cake session php line 372      in testGenerateOwnerWithdrawals     in BalanceTestCase     in  var www program app tests cases models owners equity test php

User · Accepted Answer

Turned out there was some extra code in the AppModel that was messing things up:

in beforeFind and afterFind:

App::Import("Session");
$session = new CakeSession();
$sim_id = $session->read("Simulation.id");

I don't know why, but that was what the problem was. Removing those lines fixed the issue I was having.

User · Answer

Another possibility for this warning  and  most likely  problems with app behavior  is that the original author of the app relied on session auto start being on  defaults to off  If you don t want to mess with the code and just need it to work  you can always change php configuration and restart php-fpm  if this is a web app    etc php d my-new-file ini   session auto start   1   This is correct for CentOS 8  adjust for your OS packaging

User · Answer

You need make sure to start the session at the top of every PHP file where you want to use the   SESSION superglobal   Like this    lt  php   session start      echo   SESSION  youritem      gt    You forgot the Session HELPER   Check this link   book cakephp org 2 0 en core-libraries helpers session html

[php] Undefined variable: $_SESSION

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