Circular resource dependency error in Zend framework 1.12.11

Question

I have running a Zend1 Application on AWS servers. It is zend 1.12.11 and php 5.6 on AWS, I want to set it up on my local machine, On localhost I have php 7.3. I want to setup on my localhost I am getting this error message. Can anybody please let me know either it is due to php version difference or how can I fix this/ Thanks in advance.

PHP Fatal error: Uncaught Zend_Application_Bootstrap_Exception: Circular resource dependency detected in /home/stage2_bigwords_com/library/Zend/Application/Bootstrap/BootstrapAbstract.php:674 Stack trace: #0 /home/stage2_bigwords_com/library/Zend/Application/Bootstrap/BootstrapAbstract.php(641): Zend_Application_Bootstrap_BootstrapAbstract->_executeResource() #1 /home/stage2_bigwords_com/library/Zend/Application/Bootstrap/BootstrapAbstract.php(598): Zend_Application_Bootstrap_BootstrapAbstract->_bootstrap() #2 /home/stage2_bigwords_com/application/Bootstrap.php(43): Zend_Application_Bootstrap_BootstrapAbstract->bootstrap() #3 /home/stage2_bigwords_com/application/Bootstrap.php(52): Bootstrap::fetchResource() #4 /home/stage2_bigwords_com/library/Bigwords/BaseController.php(82): Bootstrap::fetchClientvars() #5 /home/stage2_bigwords_com/library/Zend/Controller/Action.php(133): Bigwords_BaseController->init() #6 /home/stage2_bigwords_com/library/Zend/Controller/Dispatcher/Standard.php(281): Zend_Controller_Action->__construct()

in /home/stage2_bigwords_com/library/Zend/Controller/Plugin/Broker.php on line 336

Answer 1

What happened there is that in your bootstrap you have something like the following code:

class Bootstrap {

  public function _initDb() {
    $session = $this->bootstrap('session');
  }
  public function _initSession() {
    $db = $this->bootstrap('db');
  }
}

As you can see to get DB initialized, you need session initialized. But to init session, you need DB. That is a circular dependency. You need to work around it somehow.

Obviously in your code it does not have to be session and db, but any resource that is initialized in bootstrap.