Using $this inside subobject - php

Question

I want to pass $this into the sub objects I create on construct However when I dump it I get a **RECURSION** flag.
<?php
namespace Cortana\Framework\System;
use Cortana\Framework\System\ApiAccessor\CacheApiAccessor;
use Cortana\Framework\System\ApiAccessor\ConfigurationApiAccessor;
use Cortana\Framework\System\ApiAccessor\DatabaseApiAccessor;
use Cortana\Framework\System\ApiAccessor\EventsManagerApiAccessor;
use Cortana\Framework\System\ApiAccessor\FilesystemApiAccessor;
use Cortana\Framework\System\ApiAccessor\LocaleApiAccessor;
use Cortana\Framework\System\ApiAccessor\LogApiAccessor;
use Cortana\Framework\System\ApiAccessor\SessionApiAccessor;
use Cortana\Framework\System\ApiAccessor\TranslateApiAccessor;
/**
* System Handler Instance
*
* #author root
*/
class SystemHandler
{
/**
* Development Environment Flag
*
* #var string
*/
const ENV_DEVELOPMENT = 'DEVELOPMENT';
/**
* Staging Environment Flag
*
* #var string
*/
const ENV_STAGING = 'STAGING';
/**
* Test Environment Flag
*
* #var string
*/
const ENV_TEST = 'TEST';
/**
* Production Environment Flag
*
* #var string
*/
const ENV_PRODUCTION = 'PRODUCTION';
/**
* Configuration api accessor instance
*
* #var ConfigurationApiAccessor
*/
protected $configurationApiAccessor;
/**
* Database api accessor instance
*
* #var DatabaseApiAccessor
*/
protected $databaseApiAccessor;
/**
* Translation api accessor instance
*
* #var TranslateApiAccessor
*/
protected $translateApiAccessor;
/**
* Cache api accessor instance
*
* #var CacheApiAccessor
*/
protected $cacheApiAccessor;
/**
* Locale api accessor instance
*
* #var LocaleApiAccessor
*/
protected $localeApiAccessor;
/**
* Events Manager api accessor instance
*
* #var EventsManagerApiAccessor
*/
protected $eventsManagerApiAccessor;
/**
* Log api accessor instance
*
* #var LogApiAccessor
*/
protected $logApiAccessor;
/**
* Session api accessor instance
*
* #var SessionApiAccessor
*/
protected $sessionApiAccessor;
/**
* Filesystem api accessor instance
*
* #var FilesystemApiAccessor
*/
protected $filesystemApiAccessor;
/**
* Array of Loaded Modules
*
* #var array
*/
protected $loadedModules=[];
/**
* System Environment
*
* #var string
*/
protected $environment;
/**
* System Handler Constructor. Loads Accessors
*/
public function __construct()
{
$this->filesystemApiAccessor = new FilesystemApiAccessor();
$this->configurationApiAccessor = new ConfigurationApiAccessor();
$this->databaseApiAccessor = new DatabaseApiAccessor();
$this->cacheApiAccessor = new CacheApiAccessor();
$this->eventsManagerApiAccessor = new EventsManagerApiAccessor();
$this->localeApiAccessor = new LocaleApiAccessor();
$this->logApiAccessor = new LogApiAccessor();
$this->sessionApiAccessor = new SessionApiAccessor();
$this->translateApiAccessor = new TranslateApiAccessor();
}
public function build()
{
}
/**
* Set the system environment
*
* #param string $environment the system environment
* #return SystemHandler
*/
public function setEnvironment($environment)
{
$this->environment = $environment;
return $this;
}
/**
* Return the system environment
*
* #return string the system environment
*/
public function getEnvironment()
{
return $this->environment;
}
/**
* Set the system loaded modules
*
* #param array $loadedmodules array of loaded system modules
* #return SystemHandler
*/
public function setLoadedModules(array $loadedmodules)
{
$this->loadedModules = $loadedmodules;
return $this;
}
/**
* Add a module as a loaded module
*
* #param string $module module to add as a loaded module
* #return SystemHandler
*/
public function addLoadedModule($module)
{
$this->loadedModules[] = $module;
return $this;
}
/**
* Clear loaded modules
*
* #return SystemHandler
*/
public function clearLoadedModule()
{
$this->loadedModules = [];
return $this;
}
/**
* Set the configuration api accessor instance
*
* #param ConfigurationApiAccessor $configurationApiAccessor the configuration api accessor instance
* #return SystemHandler
*/
public function setConfigurationApiAccessor(ConfigurationApiAccessor $configurationApiAccessor)
{
$this->configurationApiAccessor = $configurationApiAccessor;
return $this;
}
/**
* Return the configuration api accessor instance
*
* #return ConfigurationApiAccessor the configuration api accessor instance
*/
public function getConfigurationApiAccessor()
{
return $this->configurationApiAccessor;
}
/**
* Set the database api accessor instance
*
* #param DatabaseApiAccessor $databaseApiAccessor the database api accessor instance
* #return SystemHandler
*/
public function setDatabaseApiAccessor(DatabaseApiAccessor $databaseApiAccessor)
{
$this->databaseApiAccessor = $databaseApiAccessor;
return $this;
}
/**
* Return the database api accessor instance
*
* #return DatabaseApiAccessor the database api accessor instance
*/
public function getDatabaseApiAccessor()
{
return $this->databaseApiAccessor;
}
/**
* Set the translation api accessor instance
*
* #param TranslateApiAccessor $translateApiAccessor the translation api accessor instance
* #return SystemHandler
*/
public function setTranslateApiAccessor(TranslateApiAccessor $translateApiAccessor)
{
$this->translateApiAccessor = $translateApiAccessor;
return $this;
}
/**
* Return the translation api accessor instance
*
* #return TranslateApiAccessor the translation api accessor instance
*/
public function getTranslateApi()
{
return $this->translateApiAccessor;
}
/**
* Set the cache api accessor instance
*
* #param CacheApiAccessor $cacheApiAccessor the cache api accessor instance
* #return SystemHandler
*/
public function setCacheApiAccessor(CacheApiAccessor $cacheApiAccessor)
{
$this->cacheApiAccessor = $cacheApiAccessor;
return $this;
}
/**
* Return the cache api accessor instance
*
* #return CacheApiAccessor the cache api accessor instance
*/
public function getCacheApiAccessor()
{
return $this->cacheApiAccessor;
}
/**
* Set the locale api accessor instance
*
* #param LocaleApiAccessor $localeApiAccessor the locale api accessor instance
* #return SystemHandler
*/
public function setLocaleApiAccessor(LocaleApi $localeApiAccessor)
{
$this->localeApiAccessor = $localeApiAccessor;
return $this;
}
/**
* Return the locale api accessor instance
*
* #return LocaleApiAccessor the locale api accessor instance
*/
public function getLocaleApiAccessor()
{
return $this->localeApi;
}
/**
* Set the events manager api accessor instance
*
* #param EventsManagerApiAccessor $eventsManagerApiAccessor the events manager api accessor instance
* #return SystemHandler
*/
public function setEventsManagerApiAccessor(EventsManagerApiAccessor $eventsManagerApiAccessor)
{
$this->eventsManagerApiAccessor = $eventsManagerApiAccessor;
return $this;
}
/**
* Return the events manager api accessor instance
*
* #return EventsManagerApiAccessor the events manager api accessor instance
*/
public function getEventsManagerApiAccessor()
{
return $this->eventsManagerApiAccessor;
}
/**
* Set the logger api accessor instance
*
* #param LogApiAccessor $logApiAccessor the log api accessor instance
* #return SystemHandler
*/
public function setLogApi(LogApiAccessor $logApiAccessor)
{
$this->logApiAccessor = $logApiAccessor;
return $this;
}
/**
* Return the log api accessor instance
*
* #return LogApiAccessor the log api accessor instance
*/
public function getLogApi()
{
return $this->logApiAccessor;
}
/**
* Set the session api accessor instance
*
* #param SessionApiAccessor $sessionApiAccessor the session api accessor instance
* #return SystemHandler
*/
public function setSessionApiAccessor(SessionApiAccessor $sessionApiAccessor)
{
$this->sessionApiAccessor = $sessionApiAccessor;
return $this;
}
/**
* Return the session api accessor instance
*
* #return SessionApiAccessor the session api accessor instance
*/
public function getSessionApiAccessor()
{
return $this->sessionApiAccessor;
}
/**
* Set the filesystem api accessor instance
*
* #param FilesystemApiAccessor $filesystemApiAccessor the filesystem api accessor instance
* #return SystemHandler
*/
public function setFilesystemApiAccessor(FilesystemApiAccessor $filesystemApiAccessor)
{
$this->filesystemApiAccessor = $filesystemApiAccessor;
return $this;
}
/**
* Return the filesystem api accessor instance
*
* #return FilesystemApiAccessor the filesystem api accessor instance
*/
public function getFilesystemApiAccessor()
{
return $this->filesystemApiAccessor;
}
}

Answer 1

when you create a new class that extends other class, you don't need to pass anything to the constructor, it will be automatically available in the subclass as long as those methods/properties are public or protected. If they are private, you cannot use them in subclass. If you want to use protected/public properties or methods from parent class in your subclass, use them as if you were in the parent class.
class parent{
protected $foo = 'foobar';
protected function get_foo(){
return $this->foo;
}
}
class subclass extends parent{
protected $bar;
public function __construct(){
$this->bar = $this->get_foo();
}
public function get_bar(){
return $this->bar;
}
}
$baz = new bar;
echo $baz->get_bar();
// outputs 'foobar'