| 1 |  |  | <?php namespace Arcanesoft\Foundation\ViewComposers\System; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | use Illuminate\View\View; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  * Class     ServerRequirementsComposer | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |  * @package  Arcanesoft\Foundation\ViewComposers\System | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |  * @author   ARCANEDEV <[email protected]> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  | class ServerRequirementsComposer | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |     /* ----------------------------------------------------------------- | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |      |  Constants | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |      | ----------------------------------------------------------------- | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |     const VIEW = 'foundation::admin.system.information._includes.server-requirements'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  |     /* ----------------------------------------------------------------- | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  |      |  Main Methods | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |      | ----------------------------------------------------------------- | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |      * Compose the view. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |      * @param  \Illuminate\View\View  $view | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |     public function compose(View $view) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |         $requirements['server']['ssl']     = $this->checkSslInstalled(); | 
                            
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                | 31 |  |  |         $requirements['server']['modules'] = $this->getServerModules([ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |             'mod_rewrite', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |         ]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |         $view->with('requirements', $requirements); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  |     /* ----------------------------------------------------------------- | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |      |  Other Methods | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |      | ----------------------------------------------------------------- | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |      * Check if SSL is installed. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |      * @return bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  |     private function checkSslInstalled() | 
                            
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                | 48 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |         return (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off') ? true : false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  |      * Check the APACHE requirements. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  |      * @param  array  $requirements | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  |      * @return \Illuminate\Support\Collection | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 58 |  |  |      */ | 
            
                                                        
            
                                    
            
            
                | 59 |  |  |     private function getServerModules(array $requirements) | 
            
                                                        
            
                                    
            
            
                | 60 |  |  |     { | 
            
                                                        
            
                                    
            
            
                | 61 |  |  |         if ( ! function_exists('apache_get_modules')) { | 
            
                                                        
            
                                    
            
            
                | 62 |  |  |             return collect([]); | 
            
                                                        
            
                                    
            
            
                | 63 |  |  |         } | 
            
                                                        
            
                                    
            
            
                | 64 |  |  |  | 
            
                                                        
            
                                    
            
            
                | 65 |  |  |         $modules      = apache_get_modules(); | 
            
                                                        
            
                                    
            
            
                | 66 |  |  |         $requirements = array_combine($requirements, $requirements); | 
            
                                                        
            
                                    
            
            
                | 67 |  |  |  | 
            
                                                        
            
                                    
            
            
                | 68 |  |  |         return collect($requirements)->transform(function ($requirement) use ($modules) { | 
            
                                                        
            
                                    
            
            
                | 69 |  |  |             return in_array($requirement, $modules); | 
            
                                                        
            
                                    
            
            
                | 70 |  |  |         }); | 
            
                                                        
            
                                    
            
            
                | 71 |  |  |     } | 
            
                                                        
            
                                    
            
            
                | 72 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 73 |  |  |  | 
            
                        
Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code.
Let’s take a look at an example:
As you can see in this example, the array
$myArrayis initialized the first time when the foreach loop is entered. You can also see that the value of thebarkey is only written conditionally; thus, its value might result from a previous iteration.This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.