92     protected $httpHeaders = array();  variable in Mobile_Detect
704      * @param array $httpHeaders The headers to set. If null, then using PHP's _SERVER to extract
707     public function setHttpHeaders($httpHeaders = null)  argument
710         if (!is_array($httpHeaders) || !count($httpHeaders)) {
711             $httpHeaders = $_SERVER;
715         $this->httpHeaders = array();
719         foreach ($httpHeaders as $key => $value) {
721                 $this->httpHeaders[$key] = $value;
726         $this->setCfHeaders($httpHeaders);
736         return $this->httpHeaders;
761         if (isset($this->httpHeaders[$header])) {
762             return $this->httpHeaders[$header];
763         } elseif (isset($this->httpHeaders[$altHeader])) {
764             return $this->httpHeaders[$altHeader];
854 …if (false === empty($this->httpHeaders[$altHeader])) { // @todo: should use getHttpHeader(), but i…
855                     $this->userAgent .= $this->httpHeaders[$altHeader] . " ";
1051             if (isset($this->httpHeaders[$mobileHeader])) {
1054                         if (strpos($this->httpHeaders[$mobileHeader], $_match) !== false) {
1149      * @param  null $httpHeaders deprecated
1152     public function isMobile($userAgent = null, $httpHeaders = null)  argument
1155         if ($httpHeaders) {
1156             $this->setHttpHeaders($httpHeaders);
1186      * @param  array  $httpHeaders deprecated
1189     public function isTablet($userAgent = null, $httpHeaders = null)  argument
1217      * @param  string        $httpHeaders deprecated
1220     public function is($key, $userAgent = null, $httpHeaders = null)  argument
1223         if ($httpHeaders) {
1224             $this->setHttpHeaders($httpHeaders);