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userAgent = $_SERVER['HTTP_USER_AGENT']; } else { $this->userAgent = $userAgent; } // If no explicit acceptable encoding string was given attempt to use the implicit one from server environment. if (empty($acceptEncoding) && isset($_SERVER['HTTP_ACCEPT_ENCODING'])) { $this->acceptEncoding = $_SERVER['HTTP_ACCEPT_ENCODING']; } else { $this->acceptEncoding = $acceptEncoding; } // If no explicit acceptable languages string was given attempt to use the implicit one from server environment. if (empty($acceptLanguage) && isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) { $this->acceptLanguage = $_SERVER['HTTP_ACCEPT_LANGUAGE']; } else { $this->acceptLanguage = $acceptLanguage; } } /** * Magic method to get an object property's value by name. * * @param string $name Name of the property for which to return a value. * * @return mixed The requested value if it exists. * * @since 1.0 */ public function __get($name) { switch ($name) { case 'mobile': case 'platform': if (empty($this->detection['platform'])) { $this->detectPlatform($this->userAgent); } break; case 'engine': if (empty($this->detection['engine'])) { $this->detectEngine($this->userAgent); } break; case 'browser': case 'browserVersion': if (empty($this->detection['browser'])) { $this->detectBrowser($this->userAgent); } break; case 'languages': if (empty($this->detection['acceptLanguage'])) { $this->detectLanguage($this->acceptLanguage); } break; case 'encodings': if (empty($this->detection['acceptEncoding'])) { $this->detectEncoding($this->acceptEncoding); } break; case 'robot': if (empty($this->detection['robot'])) { $this->detectRobot($this->userAgent); } break; case 'headers': if (empty($this->detection['headers'])) { $this->detectHeaders(); } break; } // Return the property if it exists. if (property_exists($this, $name)) { return $this->$name; } $trace = debug_backtrace(); trigger_error( 'Undefined property via __get(): ' . $name . ' in ' . $trace[0]['file'] . ' on line ' . $trace[0]['line'], E_USER_NOTICE ); } /** * Detects the client browser and version in a user agent string. * * @param string $userAgent The user-agent string to parse. * * @return void * * @since 1.0 */ protected function detectBrowser($userAgent) { $patternBrowser = ''; // Attempt to detect the browser type. Obviously we are only worried about major browsers. if ((stripos($userAgent, 'MSIE') !== false) && (stripos($userAgent, 'Opera') === false)) { $this->browser = self::IE; $patternBrowser = 'MSIE'; } elseif (stripos($userAgent, 'Trident') !== false) { $this->browser = self::IE; $patternBrowser = ' rv'; } elseif (stripos($userAgent, 'Edge') !== false) { $this->browser = self::EDGE; $patternBrowser = 'Edge'; } elseif (stripos($userAgent, 'Edg') !== false) { $this->browser = self::EDG; $patternBrowser = 'Edg'; } elseif ((stripos($userAgent, 'Firefox') !== false) && (stripos($userAgent, 'like Firefox') === false)) { $this->browser = self::FIREFOX; $patternBrowser = 'Firefox'; } elseif (stripos($userAgent, 'OPR') !== false) { $this->browser = self::OPERA; $patternBrowser = 'OPR'; } elseif (stripos($userAgent, 'Chrome') !== false) { $this->browser = self::CHROME; $patternBrowser = 'Chrome'; } elseif (stripos($userAgent, 'Safari') !== false) { $this->browser = self::SAFARI; $patternBrowser = 'Safari'; } elseif (stripos($userAgent, 'Opera') !== false) { $this->browser = self::OPERA; $patternBrowser = 'Opera'; } // If we detected a known browser let's attempt to determine the version. if ($this->browser) { // Build the REGEX pattern to match the browser version string within the user agent string. $pattern = '#(?
Version|' . $patternBrowser . ')[/ :]+(?
[0-9.|a-zA-Z.]*)#'; // Attempt to find version strings in the user agent string. $matches = []; if (preg_match_all($pattern, $userAgent, $matches)) { // Do we have both a Version and browser match? if (\count($matches['browser']) == 2) { // See whether Version or browser came first, and use the number accordingly. if (strripos($userAgent, 'Version') < strripos($userAgent, $patternBrowser)) { $this->browserVersion = $matches['version'][0]; } else { $this->browserVersion = $matches['version'][1]; } } elseif (\count($matches['browser']) > 2) { $key = array_search('Version', $matches['browser']); if ($key) { $this->browserVersion = $matches['version'][$key]; } } else { // We only have a Version or a browser so use what we have. $this->browserVersion = $matches['version'][0]; } } } // Mark this detection routine as run. $this->detection['browser'] = true; } /** * Method to detect the accepted response encoding by the client. * * @param string $acceptEncoding The client accept encoding string to parse. * * @return void * * @since 1.0 */ protected function detectEncoding($acceptEncoding) { // Parse the accepted encodings. $this->encodings = array_map('trim', (array) explode(',', $acceptEncoding)); // Mark this detection routine as run. $this->detection['acceptEncoding'] = true; } /** * Detects the client rendering engine in a user agent string. * * @param string $userAgent The user-agent string to parse. * * @return void * * @since 1.0 */ protected function detectEngine($userAgent) { if (stripos($userAgent, 'MSIE') !== false || stripos($userAgent, 'Trident') !== false) { // Attempt to detect the client engine -- starting with the most popular ... for now. $this->engine = self::TRIDENT; } elseif (stripos($userAgent, 'Edge') !== false || stripos($userAgent, 'EdgeHTML') !== false) { $this->engine = self::EDGE; } elseif (stripos($userAgent, 'Edg') !== false) { $this->engine = self::BLINK; } elseif (stripos($userAgent, 'Chrome') !== false) { $result = explode('/', stristr($userAgent, 'Chrome')); $version = explode(' ', $result[1]); if ($version[0] >= 28) { $this->engine = self::BLINK; } else { $this->engine = self::WEBKIT; } } elseif (stripos($userAgent, 'AppleWebKit') !== false || stripos($userAgent, 'blackberry') !== false) { if (stripos($userAgent, 'AppleWebKit') !== false) { $result = explode('/', stristr($userAgent, 'AppleWebKit')); $version = explode(' ', $result[1]); if ($version[0] === 537.36) { // AppleWebKit/537.36 is Blink engine specific, exception is Blink emulated IEMobile, Trident or Edge $this->engine = self::BLINK; } } // Evidently blackberry uses WebKit and doesn't necessarily report it. Bad RIM. $this->engine = self::WEBKIT; } elseif (stripos($userAgent, 'Gecko') !== false && stripos($userAgent, 'like Gecko') === false) { // We have to check for like Gecko because some other browsers spoof Gecko. $this->engine = self::GECKO; } elseif (stripos($userAgent, 'Opera') !== false || stripos($userAgent, 'Presto') !== false) { $version = false; if (preg_match('/Opera[\/| ]?([0-9.]+)/u', $userAgent, $match)) { $version = (float) ($match[1]); } if (preg_match('/Version\/([0-9.]+)/u', $userAgent, $match)) { if ((float) ($match[1]) >= 10) { $version = (float) ($match[1]); } } if ($version !== false && $version >= 15) { $this->engine = self::BLINK; } else { $this->engine = self::PRESTO; } } elseif (stripos($userAgent, 'KHTML') !== false) { // *sigh* $this->engine = self::KHTML; } elseif (stripos($userAgent, 'Amaya') !== false) { // Lesser known engine but it finishes off the major list from Wikipedia :-) $this->engine = self::AMAYA; } // Mark this detection routine as run. $this->detection['engine'] = true; } /** * Method to detect the accepted languages by the client. * * @param mixed $acceptLanguage The client accept language string to parse. * * @return void * * @since 1.0 */ protected function detectLanguage($acceptLanguage) { // Parse the accepted encodings. $this->languages = array_map('trim', (array) explode(',', $acceptLanguage)); // Mark this detection routine as run. $this->detection['acceptLanguage'] = true; } /** * Detects the client platform in a user agent string. * * @param string $userAgent The user-agent string to parse. * * @return void * * @since 1.0 */ protected function detectPlatform($userAgent) { // Attempt to detect the client platform. if (stripos($userAgent, 'Windows') !== false) { $this->platform = self::WINDOWS; // Let's look at the specific mobile options in the Windows space. if (stripos($userAgent, 'Windows Phone') !== false) { $this->mobile = true; $this->platform = self::WINDOWS_PHONE; } elseif (stripos($userAgent, 'Windows CE') !== false) { $this->mobile = true; $this->platform = self::WINDOWS_CE; } } elseif (stripos($userAgent, 'iPhone') !== false) { // Interestingly 'iPhone' is present in all iOS devices so far including iPad and iPods. $this->mobile = true; $this->platform = self::IPHONE; // Let's look at the specific mobile options in the iOS space. if (stripos($userAgent, 'iPad') !== false) { $this->platform = self::IPAD; } elseif (stripos($userAgent, 'iPod') !== false) { $this->platform = self::IPOD; } } elseif (stripos($userAgent, 'iPad') !== false) { // In case where iPhone is not mentioed in iPad user agent string $this->mobile = true; $this->platform = self::IPAD; } elseif (stripos($userAgent, 'iPod') !== false) { // In case where iPhone is not mentioed in iPod user agent string $this->mobile = true; $this->platform = self::IPOD; } elseif (preg_match('/macintosh|mac os x/i', $userAgent)) { // This has to come after the iPhone check because mac strings are also present in iOS devices. $this->platform = self::MAC; } elseif (stripos($userAgent, 'Blackberry') !== false) { $this->mobile = true; $this->platform = self::BLACKBERRY; } elseif (stripos($userAgent, 'Android') !== false) { $this->mobile = true; $this->platform = self::ANDROID; /* * Attempt to distinguish between Android phones and tablets * There is no totally foolproof method but certain rules almost always hold * Android 3.x is only used for tablets * Some devices and browsers encourage users to change their UA string to include Tablet. * Google encourages manufacturers to exclude the string Mobile from tablet device UA strings. * In some modes Kindle Android devices include the string Mobile but they include the string Silk. */ if (stripos($userAgent, 'Android 3') !== false || stripos($userAgent, 'Tablet') !== false || stripos($userAgent, 'Mobile') === false || stripos($userAgent, 'Silk') !== false) { $this->platform = self::ANDROIDTABLET; } } elseif (stripos($userAgent, 'Linux') !== false) { $this->platform = self::LINUX; } // Mark this detection routine as run. $this->detection['platform'] = true; } /** * Determines if the browser is a robot or not. * * @param string $userAgent The user-agent string to parse. * * @return void * * @since 1.0 */ protected function detectRobot($userAgent) { $this->robot = (bool) preg_match('/http|bot|robot|spider|crawler|curl|^$/i', $userAgent); $this->detection['robot'] = true; } /** * Fills internal array of headers * * @return void * * @since 1.3.0 */ protected function detectHeaders() { if (\function_exists('getallheaders')) { // If php is working under Apache, there is a special function $this->headers = getallheaders(); } else { // Else we fill headers from $_SERVER variable $this->headers = []; foreach ($_SERVER as $name => $value) { if (substr($name, 0, 5) == 'HTTP_') { $this->headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value; } } } // Mark this detection routine as run. $this->detection['headers'] = true; } }