| 1 |  |  | <?php /** MicroDispatcher */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  | namespace Micro\Base; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  | use Micro\Web\IResponse; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |  * Dispatcher class file. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |  * @author Oleg Lunegov <[email protected]> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |  * @link https://github.com/linpax/microphp-framework | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  |  * @copyright Copyright (c) 2013 Oleg Lunegov | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |  * @license https://github.com/linpax/microphp-framework/blob/master/LICENSE | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |  * @package Micro | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |  * @subpackage Base | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |  * @version 1.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |  * @since 1.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  | class Dispatcher implements IDispatcher | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  | { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |     /** @var array $listeners Listeners objects on events */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |     protected $listeners = []; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |      * Add listener on event | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |      * @access public | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  |      * @param string $listener listener name | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  |      * @param array $event ['Object', 'method'] or callable | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  |      * @param int|null $prior priority | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |      * @return bool | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  |      */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |     public function addListener($listener, $event, $prior = null) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |     { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  |         if (!is_callable($event)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  |             return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |         if (!array_key_exists($listener, $this->listeners)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |             $this->listeners[$listener] = []; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |         if (!$prior) { | 
                            
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                | 47 |  |  |             $this->listeners[$listener][] = $event; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  |         } else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  |             array_splice($this->listeners[$listener], $prior, 0, $event); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  |         } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  |         return true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  |     } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  |     /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |      * Send signal to run event | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  |      * @access public | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |      * @param string $listener listener name | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  |      * @param array $params Signal parameters | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |      * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  |      * @return mixed | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 64 |  |  |      */ | 
            
                                                        
            
                                    
            
            
                | 65 |  |  |     public function signal($listener, array $params = []) | 
            
                                                        
            
                                    
            
            
                | 66 |  |  |     { | 
            
                                                        
            
                                    
            
            
                | 67 |  |  |         $result = null; | 
            
                                                        
            
                                    
            
            
                | 68 |  |  |  | 
            
                                                        
            
                                    
            
            
                | 69 |  |  |         if (array_key_exists($listener, $this->listeners) && 0 !== count($this->listeners[$listener])) { | 
            
                                                        
            
                                    
            
            
                | 70 |  |  |             /** @noinspection ForeachSourceInspection */ | 
            
                                                        
            
                                    
            
            
                | 71 |  |  |             foreach ($this->listeners[$listener] as $listen) { | 
            
                                                        
            
                                    
            
            
                | 72 |  |  |                 $result = call_user_func($listen, $params); | 
            
                                                        
            
                                    
            
            
                | 73 |  |  |  | 
            
                                                        
            
                                    
            
            
                | 74 |  |  |                 if ($result instanceof IResponse) { | 
            
                                                        
            
                                    
            
            
                | 75 |  |  |                     return $result; | 
            
                                                        
            
                                    
            
            
                | 76 |  |  |                 } | 
            
                                                        
            
                                    
            
            
                | 77 |  |  |             } | 
            
                                                        
            
                                    
            
            
                | 78 |  |  |         } | 
            
                                                        
            
                                    
            
            
                | 79 |  |  |  | 
            
                                                        
            
                                    
            
            
                | 80 |  |  |         return $result; | 
            
                                                        
            
                                    
            
            
                | 81 |  |  |     } | 
            
                                                        
            
                                    
            
            
                | 82 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 83 |  |  |  | 
            
                        
In PHP, under loose comparison (like
==, or!=, orswitchconditions), values of different types might be equal.For
integervalues, zero is a special case, in particular the following results might be unexpected: