Installation Controller based on Laravel

<?php
class InstallerController extends BaseController {
    public $now_step='step0';
    public $av_steps=array();
    public $data=array();
    public $install_urls=array();
    public $now_controller='';
    public $now_action='';

    public function __construct(){
        $this->_getRouterInfo();

        $this->av_steps = array("step0" => "/main", "step1" => "/step/1", "step2" => "/step/2", "step3" => "/step/3", "finish" => "/finish", "cancel" => "/cancel");;

        // Available post urls
        $base_url_install= 'http://project.dev/install';
        $this->install_urls['step0']=$base_url_install.''.$this->av_steps['step0'];
        $this->install_urls['step1']=$base_url_install.''.$this->av_steps['step1'];
        $this->install_urls['step2']=$base_url_install.''.$this->av_steps['step2'];
        $this->install_urls['step3']=$base_url_install.''.$this->av_steps['step3'];
        $this->install_urls['finish']=$base_url_install.''.$this->av_steps['finish'];
        $this->install_urls['cancel']=$base_url_install.''.$this->av_steps['cancel'];

        $use_protection=1;
        if(($this->now_action != "cancel") && ($use_protection == 1)){
            // Check current step to the real step it has taken
            if(Session::has('install_progress')){
                $this->now_step= Session::get('install_progress');
                if($this->now_step != $this->now_action){
                    // If step not equal to now action, redirect to actual step action
                    echo $this->now_action.' || '.$this->now_step;
                    _pre_array(Session::all());
                    exit("<br />=== Halt on construct ===");
                }
                else{
                    // Correct step just let it pass
                }
            }
            else{
                Session::put('install_progress', 'step0');
                if($this->now_action != 'step0'){
                    header("Location: ". $this->install_urls['step0']);
                    exit();
                }
            }
        }
    }

    protected function _getRouterInfo(){
        $routeArray = Str::parseCallback(Route::currentRouteAction(), null);

        if(last($routeArray) != null){
            // Remove 'controller' from the controller name.
            $controller = str_replace('Controller', '', class_basename(head($routeArray)));

            // Take out the method from the action.
            $action = str_replace(array('get', 'post', 'patch', 'put', 'delete'), '', last($routeArray));

            $this->now_controller = $controller;
            $this->now_action = $action;
        }
    }

    public function step0(){
        /* Installer Method Step Number 0 (Main) */
        $this->data['site_doc_title']='Welcome';
        $this->data['post_url'] = $this->install_urls['step0'];

        // Check POST method (validation)
        if(Input::has('_basedom')){;
            $in_data = Input::all();
            $validator = Validator::make($in_data, array('_basedom' => "in:project.dev"));
            if($validator->passes()){
                Session::put('install_progress', 'step1');
                header("Location: ". $this->install_urls['step1']);
                exit();
            }
            else{
                // not valid, should write error message here
            }
        }

        // Return View
        return View::make('install.step0',$this->data);
    }

    public function step1(){
        /* Installer Method Step Number 1 */
        $this->data['site_doc_title']='Welcome';
        $this->data['post_url'] = $this->install_urls['step1'];
        $this->data['cancel_url'] = $this->install_urls['cancel'];

        // Return View
        return View::make('install.step1',$this->data);
    }

    public function step2(){
        // return "Installer Method Step Number 2";
        // _pre_array(Session::all());
        // echo '<br >'.Session::get('install_progress');
    }

    public function step3(){
        // return "Installer Method Step Number 3";
        // _pre_array(Session::all());
        // echo '<br >'.Session::get('install_progress');
    }

    public function finish(){
        // return "Installer Method Step Finish";
        // _pre_array(Session::all());
    }

    public function cancel(){
        $this->data['site_doc_title']='Cancelled';

        // Remove session of installation progress
        Session::forget('install_progress');

        // Return View
        return View::make('install.cancel',$this->data);
    }
}
?>