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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Backpack\PermissionManager\app\Http\Controllers;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Backpack\CRUD\app\Http\Controllers\CrudController;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // VALIDATION  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                class PermissionCrudController extends CrudController  | 
            
            
                                                                        
                            
            
                                    
            
            
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                { | 
            
            
                                                                        
                            
            
                                    
            
            
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                    use \Backpack\CRUD\app\Http\Controllers\Operations\ListOperation;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    use \Backpack\CRUD\app\Http\Controllers\Operations\CreateOperation;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    use \Backpack\CRUD\app\Http\Controllers\Operations\UpdateOperation;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    use \Backpack\CRUD\app\Http\Controllers\Operations\DeleteOperation;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function setup()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $role_model = config('backpack.permissionmanager.models.role'); | 
            
                            
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                        $permission_model = config('backpack.permissionmanager.models.permission'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->crud->setModel($permission_model);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->crud->setEntityNameStrings(trans('backpack::permissionmanager.permission_singular'), trans('backpack::permissionmanager.permission_plural')); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->crud->setRoute(backpack_url('permission')); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        // deny access according to configuration file  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (config('backpack.permissionmanager.allow_permission_create') == false) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->crud->denyAccess('create'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (config('backpack.permissionmanager.allow_permission_update') == false) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->crud->denyAccess('update'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (config('backpack.permissionmanager.allow_permission_delete') == false) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->crud->denyAccess('delete'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->crud->operation('list', function () { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->crud->addColumn([  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'name'  => 'name',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'label' => trans('backpack::permissionmanager.name'), | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'type'  => 'text',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ]);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                View Code Duplication | 
                            if (config('backpack.permissionmanager.multiple_guards')) { | 
            
                            
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                                $this->crud->addColumn([  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'name'  => 'guard_name',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'label' => trans('backpack::permissionmanager.guard_type'), | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'type'  => 'text',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ]);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        });  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->crud->operation(['create', 'update'], function () { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $this->crud->addField([  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'name'  => 'name',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'label' => trans('backpack::permissionmanager.name'), | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'type'  => 'text',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ]);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                View Code Duplication | 
                            if (config('backpack.permissionmanager.multiple_guards')) { | 
            
                            
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                                $this->crud->addField([  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'name'    => 'guard_name',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'label'   => trans('backpack::permissionmanager.guard_type'), | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'type'    => 'select_from_array',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    'options' => $this->getGuardTypes(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ]);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            //otherwise, changes won't have effect  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            \Cache::forget('spatie.permission.cache'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        });  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    /*  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * Get an array list of all available guard types  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * that have been defined in app/config/auth.php  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @return array  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     **/  | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
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                    private function getGuardTypes()  | 
            
                            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $guards = config('auth.guards'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $returnable = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach ($guards as $key => $details) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $returnable[$key] = $key;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $returnable;  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    }  | 
            
            
                                                        
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVarassignment in line 1 and the$higherassignment in line 2 are dead. The first because$myVaris never used and the second because$higheris always overwritten for every possible time line.