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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Browser.php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace w3l\Holt45;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Get data from the browser/user.  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                 */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                trait Browser  | 
            
            
                                                                        
                            
            
                                    
            
            
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                { | 
            
            
                                                                        
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * Get client ip-address  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @return null|string User ip-address  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public static function getClientIpAddress($fallbackReturn = null)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (getenv('HTTP_CLIENT_IP')) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return getenv('HTTP_CLIENT_IP'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } elseif (getenv('HTTP_X_FORWARDED_FOR')) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return getenv('HTTP_X_FORWARDED_FOR'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } elseif (getenv('HTTP_X_FORWARDED')) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return getenv('HTTP_X_FORWARDED'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } elseif (getenv('HTTP_FORWARDED_FOR')) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return getenv('HTTP_FORWARDED_FOR'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } elseif (getenv('HTTP_FORWARDED')) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return getenv('HTTP_FORWARDED'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        } elseif (getenv('REMOTE_ADDR')) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return getenv('REMOTE_ADDR'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        /* Unknown IP */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $fallbackReturn;  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * Get client operating system  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * NOTICE: HTTP_USER_AGENT is easily spoofed. Don't trust this data.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @used-by: Holt45::kbdSymbol()  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @return null|string User operating system(win|mac|linux)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public static function getClientOperatingSystem()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($userAgent = getenv('HTTP_USER_AGENT')) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if (preg_match('/linux/i', $userAgent)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                return 'linux';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            } elseif (preg_match('/macintosh|mac os x/i', $userAgent)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                return'mac';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            } elseif (preg_match('/windows|win32/i', $userAgent)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                return 'windows';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return null;  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * Get client browser  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * NOTICE: HTTP_USER_AGENT is easily spoofed. Don't trust this data.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @deprecated 0.6 Need total rewrite with decent patterns.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @return null|string User browser(Internet Explorer|Camino|Firefox|Safari|Chrome|Konqueror|Opera)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public static function getClientBrowser()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($userAgent = getenv('HTTP_USER_AGENT')) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if ((  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                preg_match('/MSIE/i', $userAgent) || | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                preg_match('/Trident/i', $userAgent) | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                ) &&  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                !preg_match('/Opera/i', $userAgent)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                return 'msie';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            } elseif (preg_match('/Camino/i', $userAgent)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                return "camino";  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            } elseif (preg_match('/Firefox/i', $userAgent)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                return "firefox";  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            } elseif (preg_match('/Safari/i', $userAgent)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                return "safari";  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            } elseif (preg_match('/Chrome/i', $userAgent)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                return "chrome";  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            } elseif (preg_match('/Konqueror/i', $userAgent)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                return "konqueror";  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            } elseif (preg_match('/Opera/i', $userAgent)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                return "opera";  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return null;  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * Check if browser is Google Chrome and not one of the browsers derived from Google Chrome.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    101
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                     * NOTICE: HTTP_USER_AGENT is easily spoofed. Don't trust this data.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @return bool  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public static function isClientBrowserGoogleChrome()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($userAgent = getenv('HTTP_USER_AGENT')) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if (preg_match('/(Chrome|CriOS)\//i', $userAgent) && | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                !preg_match('/(Aviator|brave|ChromePlus|coc_|Dragon|Edge|Flock|Iron|Kinza|Maxthon|MxNitro|Nichrome|OPR|Perk|Rockmelt|Seznam|Sleipnir|Spark|UBrowser|Vivaldi|WebExplorer|YaBrowser)/i', $userAgent)) { | 
            
                            
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                                return true;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return false;  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                      | 
            
            
                                                                        
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * Get access key modifiers  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * NOTICE: HTTP_USER_AGENT is easily spoofed. Don't trust this data.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @link https://en.wikipedia.org/wiki/Access_key Source  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @param string|null $accessKey  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @param string $getClientBrowser  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @param string $getClientOperatingSystem  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @return array|null  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public static function getBrowserAccessKeyModifiers(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    130
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                        $accessKey = null,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $getClientBrowser = "auto",  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $getClientOperatingSystem = "auto"  | 
            
                            
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                                                     | 
                
                 | 
                    ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    134
                 | 
                                    
                                                     | 
                
                 | 
                        if ($getClientBrowser == "auto") { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    135
                 | 
                                    
                                                     | 
                
                 | 
                            $getClientBrowser = self::getClientBrowser();  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    136
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    137
                 | 
                                    
                                                     | 
                
                 | 
                          | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    138
                 | 
                                    
                                                     | 
                
                 | 
                        if ($getClientOperatingSystem == "auto") { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    139
                 | 
                                    
                                                     | 
                
                 | 
                            $getClientOperatingSystem = self::getClientOperatingSystem();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    140
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    141
                 | 
                                    
                                                     | 
                
                 | 
                          | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    142
                 | 
                                    
                                                     | 
                
                 | 
                        $accessKeyModifiers = array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    143
                 | 
                                    
                                                     | 
                
                 | 
                            "windows" => array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    144
                 | 
                                    
                                                     | 
                
                 | 
                                "firefox" => array("Alt", "Shift"), | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    145
                 | 
                                    
                                                     | 
                
                 | 
                                "chrome" => array("Alt"), | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    146
                 | 
                                    
                                                     | 
                
                 | 
                                "msie" => array("Alt") | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    147
                 | 
                                    
                                                     | 
                
                 | 
                            ),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    148
                 | 
                                    
                                                     | 
                
                 | 
                            "mac" => array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    149
                 | 
                                    
                                                     | 
                
                 | 
                                "safari" => array("Ctrl", "Opt"), | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    150
                 | 
                                    
                                                     | 
                
                 | 
                                "chrome" => array("Ctrl", "Opt"), | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    151
                 | 
                                    
                                                     | 
                
                 | 
                                "firefox" => array("Ctrl", "Opt"), | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    152
                 | 
                                    
                                                     | 
                
                 | 
                                "camino" => array("Ctrl") | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    153
                 | 
                                    
                                                     | 
                
                 | 
                            ),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    154
                 | 
                                    
                                                     | 
                
                 | 
                            "linux" => array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    155
                 | 
                                    
                                                     | 
                
                 | 
                                "konqueror" => array("Ctrl"), | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    156
                 | 
                                    
                                                     | 
                
                 | 
                                "firefox" => array("Alt", "Shift"), | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    157
                 | 
                                    
                                                     | 
                
                 | 
                                "chrome" => array("Alt") | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    158
                 | 
                                    
                                                     | 
                
                 | 
                            )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    159
                 | 
                                    
                                                     | 
                
                 | 
                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    160
                 | 
                                    
                                                     | 
                
                 | 
                          | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    161
                 | 
                                    
                                                     | 
                
                 | 
                        if ($keys = $accessKeyModifiers[$getClientOperatingSystem][$getClientBrowser]) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    162
                 | 
                                    
                                                     | 
                
                 | 
                            return array_merge($keys, (array)$accessKey);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    163
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    164
                 | 
                                    
                                                     | 
                
                 | 
                        return null;  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    165
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    166
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    167
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                        
Overly long lines are hard to read on any screen. Most code styles therefor impose a maximum limit on the number of characters in a line.