Check if we are in the mobile mode

@return bool
544981
public static function is_mobile()
    {
        if (!isset($_SERVER['HTTP_ACCEPT'])) {
            return false;
        }

        $accept = $_SERVER['HTTP_ACCEPT'];

        if (isset($_SERVER['HTTP_X_WAP_PROFILE']) || isset($_SERVER['HTTP_PROFILE']))
        {
            return true;
        }
        elseif (strpos($accept, 'text/vnd.wap.wml') > 0 || strpos($accept, 'application/vnd.wap.xhtml+xml') > 0)
        {
            return true;
        }
        else
        {
            foreach (array_keys(self::$devices) as $device)
            {
                if (self::is_device($device)) return true;
            }
        }
        return false;
    }
1180426
protected function checkBrowserPlayStation()
    {
        if (stripos($this->_agent, 'PlayStation ') !== false) {
            $aresult = explode(' ', stristr($this->_agent, 'PlayStation '));
            $this->setBrowser(self::BROWSER_PLAYSTATION);
            if (isset($aresult[0])) {
                $aversion = explode(')', $aresult[2]);
                $this->setVersion($aversion[0]);
                if (stripos($this->_agent, 'Portable)') !== false || stripos($this->_agent, 'Vita') !== false) {
                    $this->setMobile(true);
                }
                return true;
            }
        }
        return false;
    }
431624
public function enabled() : bool
    {
        if ($this->isEnabled !== null) {
            return $this->isEnabled;
        }

        if (!$this->config->get("antispam.{$this->instanceType}.enabled", true)) {
            return $this->isEnabled = false;
        }

        $disabledEnv = (array) $this->config->get("antispam.{$this->instanceType}.disabled_env", []);

        if (in_array($this->config->get('app.env', 'production'), $disabledEnv)) {
            return $this->isEnabled = false;
        }

        if ($this->instanceType === 'recaptcha') {
            if ($this->config->get('antispam.recaptcha.guests_only', false) && $this->request->user() !== null) {
                return $this->isEnabled = false;
            }
        }

        return $this->isEnabled = true;
    }
1092807
function DetectMidpCapable()
   {
       if (stripos($this->useragent, $this->deviceMidp) > -1 || 
           stripos($this->httpaccept, $this->deviceMidp) > -1)
         return $this->true; 
      else
         return $this->false; 
   }
303811
protected function checkBrowserAndroidHTCNexusOne()
    {
        if( stripos($this->_agent,'Android') !== false )
        {
            if( stripos($this->_agent,'Nexus One') !== false )
            {
                $this->setVersion(self::VERSION_UNKNOWN);
                $this->setMobile(true);
                $this->setBrowser(self::BROWSER_HTC_NEXUS_ONE);
                return true;
            }
        }
        return false;
    }
163381
public static function isEnabled()
    {
        if (is_null(self::$isEnabled)) {
            self::$isEnabled = (bool) Config::getInstance()->Development['enabled'];
        }

        return self::$isEnabled;
    }
951735
def is_mobile(user_agent):
    
    if user_agent:
        b = reg_b.search(user_agent)
        v = reg_v.search(user_agent[0:4])
        return b or v
    return False
547973
public function isDesktop()
    {
        $osShort = $this->getOs('short_name');
        if (empty($osShort) || self::UNKNOWN == $osShort) {
            return false;
        }

        // Check for browsers available for mobile devices only
        if ($this->usesMobileBrowser()) {
            return false;
        }

        $decodedFamily = OperatingSystem::getOsFamily($osShort);

        return in_array($decodedFamily, self::$desktopOsArray);
    }
232429
public function isMobile()
    {
        $aMobileUA = array(
            '/iphone/i' => 'iPhone',
            '/ipod/i' => 'iPod',
            '/ipad/i' => 'iPad',
            '/android/i' => 'Android',
            '/blackberry/i' => 'BlackBerry',
            '/webos/i' => 'Mobile'
        );

        // Return true if mobile User Agent is detected.
        foreach ($aMobileUA as $sMobileKey => $sMobileOS) {
            if (preg_match($sMobileKey, $_SERVER['HTTP_USER_AGENT'])) {
                return true;
            }
        }
        // Otherwise, return false.
        return false;
    }
1110182
protected function is_useragent_mobile() {
        // Mobile detection PHP direct copy from open source detectmobilebrowser.com.
        $phonesregex = '/android .+ mobile|avantgo|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino/i';
        $modelsregex = '/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|e\-|e\/|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(di|rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|xda(\-|2|g)|yas\-|your|zeto|zte\-/i';
        return (preg_match($phonesregex, $this->useragent) || preg_match($modelsregex, substr($this->useragent, 0, 4)));
    }
1061065
protected function checkBrowserNokia()
    {
        if ($this->containString($this->_agent, array('Nokia5800', 'Nokia5530', 'Nokia5230'), true, false)) {
            $this->setBrowser(self::BROWSER_NOKIA);
            $this->setVersion('7.0');
            $this->setMobile(true);
            $this->setRobot(false);

            return true;
        }

        if ($this->checkSimpleBrowserUA(array('NokiaBrowser', 'BrowserNG', 'Series60', 'S60', 'S40OviBrowser'), $this->_agent, self::BROWSER_NOKIA, true)) {
            return true;
        }

        return false;
    }
331844
protected function checkBrowserAndroid()
    {
        if (stripos($this->_agent, 'Android') !== false) {
            $aresult = explode(' ', stristr($this->_agent, 'Android'));
            if (isset($aresult[1])) {
                $aversion = explode(' ', $aresult[1]);
                $this->setVersion($aversion[0]);
            } else {
                $this->setVersion(self::VERSION_UNKNOWN);
            }
            if (stripos($this->_agent, 'Mobile') !== false) {
                $this->setMobile(true);
            } else {
                $this->setTablet(true);
            }
            $this->setBrowser(self::BROWSER_ANDROID);
            return true;
        }
        return false;
    }
804956
public static function isMobile() {
        //微信客户端检测
        if (static::isWeChat()) {
            return true;
        }
        if (!empty($_GET['_mobile'])) {
            return true;
        }
        if (!isset($_SERVER['HTTP_USER_AGENT'])) {
            return false;
        }
        $_SERVER['ALL_HTTP'] = isset($_SERVER['ALL_HTTP']) ? $_SERVER['ALL_HTTP'] : '';
        $mobile_browser      = '0';
        if (preg_match('/(up.browser|up.link|mmp|symbian|smartphone|midp|wap|phone|iphone|ipad|ipod|android|xoom)/i', strtolower($_SERVER['HTTP_USER_AGENT']))) {
            $mobile_browser++;
        }
        if ((isset($_SERVER['HTTP_ACCEPT'])) and (strpos(strtolower($_SERVER['HTTP_ACCEPT']), 'application/vnd.wap.xhtml+xml') !== false)) {
            $mobile_browser++;
        }
        if (isset($_SERVER['HTTP_X_WAP_PROFILE'])) {
            $mobile_browser++;
        }
        if (isset($_SERVER['HTTP_PROFILE'])) {
            $mobile_browser++;
        }
        $mobile_ua     = strtolower(substr($_SERVER['HTTP_USER_AGENT'], 0, 4));
        $mobile_agents = ['w3c ', 'acs-', 'alav', 'alca', 'amoi', 'audi', 'avan', 'benq', 'bird', 'blac', 'blaz', 'brew', 'cell', 'cldc', 'cmd-', 'dang', 'doco', 'eric', 'hipt', 'inno', 'ipaq', 'java', 'jigs', 'kddi', 'keji', 'leno', 'lg-c', 'lg-d', 'lg-g', 'lge-', 'maui', 'maxo', 'midp', 'mits', 'mmef', 'mobi', 'mot-', 'moto', 'mwbp', 'nec-', 'newt', 'noki', 'oper', 'palm', 'pana', 'pant', 'phil', 'play', 'port', 'prox', 'qwap', 'sage', 'sams', 'sany', 'sch-', 'sec-', 'send', 'seri', 'sgh-', 'shar', 'sie-', 'siem', 'smal', 'smar', 'sony', 'sph-', 'symb', 't-mo', 'teli', 'tim-', 'tosh', 'tsm-', 'upg1', 'upsi', 'vk-v', 'voda', 'wap-', 'wapa', 'wapi', 'wapp', 'wapr', 'webc', 'winw', 'winw', 'xda', 'xda-',
        ];
        if (in_array($mobile_ua, $mobile_agents)) {
            $mobile_browser++;
        }
        if (strpos(strtolower($_SERVER['ALL_HTTP']), 'operamini') !== false) {
            $mobile_browser++;
        }
        # 如果用户在Windows上，预先检查重置所有内容
        if (strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'windows') !== false) {
            $mobile_browser = 0;
        }
        # 如果用户在Windows上，则是预final检查，但WP7也是Windows，其特点略有不同。
        if (strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'windows phone') !== false) {
            $mobile_browser++;
        }
        if ($mobile_browser > 0) {
            return true;
        } else {
            return false;
        }
    }
45119
public static function checkBrowserAndroid()
    {
        // Navigator
        if (stripos(self::$userAgentString, 'Android') !== false) {
            if (preg_match('/Version\/([\d\.]*)/i', self::$userAgentString, $matches)) {
                if (isset($matches[1])) {
                    self::$browser->setVersion($matches[1]);
                }
            } else {
                self::$browser->setVersion(Browser::VERSION_UNKNOWN);
            }
            self::$browser->setName(Browser::NAVIGATOR);

            return true;
        }

        return false;
    }
294632
static public function isMobile()
    {
        if (isset($_SERVER['HTTP_VIA'])
            || isset($_SERVER['HTTP_X_NOKIA_CONNECTION_MODE'])
            || isset($_SERVER['HTTP_X_UP_CALLING_LINE_ID'])
            // Check whether the browser/gateway says it accepts WML.
            || isset($_SERVER['HTTP_ACCEPT']) && strpos(strtoupper($_SERVER['HTTP_ACCEPT']), "VND.WAP.WML") > 0 )
        {
            return true;
        }
        
        $browser = isset($_SERVER['HTTP_USER_AGENT']) ? trim($_SERVER['HTTP_USER_AGENT']) : '';
        $clientkeywords = array(
            'nokia', 'sony', 'ericsson', 'mot', 'samsung', 'htc', 'sgh', 'lg', 'sharp', 'sie-'
            , 'philips', 'panasonic', 'alcatel', 'lenovo', 'iphone', 'ipod', 'blackberry', 'meizu',
            'android', 'netfront', 'symbian', 'ucweb', 'windowsce', 'palm', 'operamini',
            'operamobi', 'opera mobi', 'openwave', 'nexusone', 'cldc', 'midp', 'wap', 'mobile'
        );
        if (preg_match("/(" . implode('|', $clientkeywords) . ")/i", $browser) && strpos($browser, 'ipad') === false) {
            return TRUE;
        } else {
            return FALSE;
        }
    }
301228
public static function isMobile() : bool
    {
        if (empty($_SERVER['HTTP_USER_AGENT'])) {
            return false;
        }

        $userAgent = $_SERVER['HTTP_USER_AGENT'];
        if (strpos($userAgent, 'Mobile') !== false // many mobile devices (all iPhone, iPad, etc.)
            || strpos($userAgent, 'Android') !== false
            || strpos($userAgent, 'Silk/') !== false
            || strpos($userAgent, 'Kindle') !== false
            || strpos($userAgent, 'BlackBerry') !== false
            || strpos($userAgent, 'Opera Mini') !== false
            || strpos($userAgent, 'Opera Mobi') !== false
        ) {
            return true;
        }

        return false;
    }
133392
public static function detectDevice(){
		if($_COOKIE['v']=='m'){
			self::$devicetype=DEVICE_TYPE_MPHONE;
			}
		elseif($_COOKIE['v']=='d'){
			self::$devicetype=DEVICE_TYPE_OTHER;
			}
		if(self::$devicetype==DEVICE_TYPE_UNKNOWN){
			self::$devicetype=self::isMobile()?(self::isTablet()?DEVICE_TYPE_TABLET:DEVICE_TYPE_MPHONE):DEVICE_TYPE_OTHER;
			}
		if(empty($_COOKIE['v'])){
			if(self::$devicetype==DEVICE_TYPE_MPHONE||self::$devicetype==DEVICE_TYPE_TABLET){
				$v='m';
				}
			elseif(self::$devicetype==DEVICE_TYPE_OTHER){
				$v='d';
				}
			$expire=time()+2592000;//30 days
			setcookie('v',$v,$expire,'/',BHOSTNAME);
			}
		return self::$devicetype;
		}