function isMobeil()
{
    if ((navigator.userAgent.match(/(phone|pad|pod|iPhone|iPod|ios|iPad|Android|Mobile|BlackBerry|IEMobile|MQQBrowser|JUC|Fennec|wOSBrowser|BrowserNG|WebOS|Symbian|Windows Phone)/i))) {
           alert('手机端')
    }else{
           alert('PC端')
    }
}

function isBrowser() {
        var userAgent = navigator.userAgent;
        //微信内置浏览器
        if(userAgent.match(/MicroMessenger/i) == 'MicroMessenger') {
            return "Wx";
        }
        //QQ内置浏览器
        else if(userAgent.match(/QQ/i) == 'QQ') {
            return "QQ";
        }
        //Chrome
        else if(userAgent.match(/Chrome/i) == 'Chrome') {
            return "Chrome";
        }
        //Opera
        else if(userAgent.match(/Opera/i) == 'Opera') {
            return "Opera";
        }
        //Firefox
        else if(userAgent.match(/Firefox/i) == 'Firefox') {
            return "Firefox";
        }
        //Safari
        else if(userAgent.match(/Safari/i) == 'Safari') {
            return "Safari";
        }
        //IE
        else if(!!window.ActiveXObject || "ActiveXObject" in window) {
            return "IE";
        }
        else {
            return "未定义:"+userAgent;
        }
}

　　//判断用户设备是手机还是 pc,手机端返回 true ,pc 端返回 false
    public function isMobile(){
        // 如果有HTTP_X_WAP_PROFILE则一定是移动设备
        if (isset ($_SERVER['HTTP_X_WAP_PROFILE'])){
            return TRUE;
        }
        // 如果via信息含有wap则一定是移动设备,部分服务商会屏蔽该信息
        if (isset ($_SERVER['HTTP_VIA'])){
            return stristr($_SERVER['HTTP_VIA'], "wap") ? TRUE : FALSE;// 找不到为flase,否则为TRUE
        }
        // 判断手机发送的客户端标志,兼容性有待提高
        if (isset ($_SERVER['HTTP_USER_AGENT'])) {
            $clientkeywords = array (
                'mobile',
                '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',
                'openwave',
                'nexusone',
                'cldc',
                'midp',
                'wap'
            );
            // 从HTTP_USER_AGENT中查找手机浏览器的关键字
            if (preg_match("/(" . implode('|', $clientkeywords) . ")/i", strtolower($_SERVER['HTTP_USER_AGENT']))){
                return TRUE;
            }
        }
        if (isset ($_SERVER['HTTP_ACCEPT'])){ // 协议法，因为有可能不准确，放到最后判断
            // 如果只支持wml并且不支持html那一定是移动设备
            // 如果支持wml和html但是wml在html之前则是移动设备
            if ((strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') !== FALSE) && (strpos($_SERVER['HTTP_ACCEPT'], 'text/html') === FALSE || (strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') < strpos($_SERVER['HTTP_ACCEPT'], 'text/html')))){
                return TRUE;
            }
        }
        return FALSE;
    }

//获取浏览器类型
 public function getBrowser() {
     $agent   = $_SERVER['HTTP_USER_AGENT'];
      if(strpos($agent, 'MicroMessenger') !== false){
            echo "wx";
      }else if(strpos($agent, 'QQ') !== false){
            echo "qq";
      }
      else{
            echo "other";
      }
 }

// 如果是https 连接返回true ,否则返回false
public function isHttps() {
        if ( !empty($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) !== 'off') {
            return true;
        } elseif ( isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] === 'https' ) {
            return true;
        } elseif ( !empty($_SERVER['HTTP_FRONT_END_HTTPS']) && strtolower($_SERVER['HTTP_FRONT_END_HTTPS']) !== 'off') {
            return true;
        }
        return false;
    }

/**
 * 获取客户端IP地址
 * @param integer $type 返回类型 0 返回IP地址 1 返回IPV4地址数字
 * @param boolean $adv 是否进行高级模式获取（有可能被伪装） 
 * @return mixed
 */
function get_client_ip($type = 0,$adv=false) {
    $type       =  $type ? 1 : 0;
    static $ip  =   NULL;
    if ($ip !== NULL) return $ip[$type];
    if($adv){
        if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
            $arr    =   explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
            $pos    =   array_search('unknown',$arr);
            if(false !== $pos) unset($arr[$pos]);
            $ip     =   trim($arr[0]);
        }elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {
            $ip     =   $_SERVER['HTTP_CLIENT_IP'];
        }elseif (isset($_SERVER['REMOTE_ADDR'])) {
            $ip     =   $_SERVER['REMOTE_ADDR'];
        }
    }elseif (isset($_SERVER['REMOTE_ADDR'])) {
        $ip     =   $_SERVER['REMOTE_ADDR'];
    }
    // IP地址合法验证
    $long = sprintf("%u",ip2long($ip));
    $ip   = $long ? array($ip, $long) : array('0.0.0.0', 0);
    return $ip[$type];
}