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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace jumper423\decaptcha\services;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Class RuCaptchaGrid.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class RuCaptchaGrid extends RuCaptchaInstruction  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                { | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function init()  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        parent::init();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        unset(  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $this->paramsNames[static::ACTION_FIELD_PHRASE],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $this->paramsNames[static::ACTION_FIELD_PINGBACK],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $this->paramsNames[static::ACTION_FIELD_REGSENSE],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $this->paramsNames[static::ACTION_FIELD_NUMERIC],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $this->paramsNames[static::ACTION_FIELD_CALC],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $this->paramsNames[static::ACTION_FIELD_MIN_LEN],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $this->paramsNames[static::ACTION_FIELD_MAX_LEN],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $this->actions[static::ACTION_RECOGNIZE][static::ACTION_FIELDS][self::ACTION_FIELD_PHRASE],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $this->actions[static::ACTION_RECOGNIZE][static::ACTION_FIELDS][self::ACTION_FIELD_PINGBACK],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $this->actions[static::ACTION_RECOGNIZE][static::ACTION_FIELDS][self::ACTION_FIELD_REGSENSE],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $this->actions[static::ACTION_RECOGNIZE][static::ACTION_FIELDS][self::ACTION_FIELD_NUMERIC],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $this->actions[static::ACTION_RECOGNIZE][static::ACTION_FIELDS][self::ACTION_FIELD_CALC],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $this->actions[static::ACTION_RECOGNIZE][static::ACTION_FIELDS][self::ACTION_FIELD_MIN_LEN],  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            $this->actions[static::ACTION_RECOGNIZE][static::ACTION_FIELDS][self::ACTION_FIELD_MAX_LEN]  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->paramsNames[static::ACTION_FIELD_RECAPTCHA] = 'recaptcha';  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->actions[static::ACTION_RECOGNIZE][static::ACTION_FIELDS][static::ACTION_FIELD_RECAPTCHA] = [  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            static::PARAM_SLUG_DEFAULT    => 1,  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            static::PARAM_SLUG_TYPE       => static::PARAM_FIELD_TYPE_INTEGER,  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            static::PARAM_SLUG_NOTWIKI    => true,  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        ];  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->wiki->setText(['service', 'name'], [  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            'ru' => 'RuCaptcha Сетка (ReCaptcha v2)',  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            'en' => 'RuCaptcha Grid (ReCaptcha v2)',  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        ]);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->wiki->setText(['recognize', 'price'], [  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            'ru' => 'Стоимость 1000 распознаний данной капчи - 70 рублей.',  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        ]);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->wiki->setText(['recognize', 'desc'], [  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            'ru' => 'Для решения рекапчи, где нужно выбирать определённые квадраты. В ответ придут номера картинок, на которые надо нажать.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                Обратите внимание, что рекапчи бывают не только 3 на 3 квадрата, но попадаются и 4 на 4 квадрата. Что бы понять какую именно картинку Вы шлёте, мы смотрим размер в px картинки. Если она 300x300px, то мы накладываем на эту картинку сетку 3х3. Если размер другой - накладываем сетку 4х4. Поэтому не надо склеивать изображение с чем-либо.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                Обратите внимание, что необходимо засылать саму картинку рекапчи, а не делать её скриншот.',  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        ]);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->wiki->setText(['recognize','data'], [  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            static::ACTION_FIELD_INSTRUCTIONS => 'Where\'s the cat?',  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        ]);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getCode()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $code = parent::getCode();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $code = explode(':', $code)[1]; | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return explode('/', $code); | 
            
                            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design.
Let’s take a look at an example:
Our function
my_functionexpects aPostobject, and outputs the author of the post. The base classPostreturns a simple string and outputting a simple string will work just fine. However, the child classBlogPostwhich is a sub-type ofPostinstead decided to return anobject, and is therefore violating the SOLID principles. If aBlogPostwere passed tomy_function, PHP would not complain, but ultimately fail when executing thestrtouppercall in its body.