125      * @param string $name
128     function hasHeader($name) {  argument
130         return isset($this->headers[strtolower($name)]);
147      * @param string $name
150     function getHeader($name) {  argument
152         $name = strtolower($name);
154         if (isset($this->headers[$name])) {
155             return implode(',', $this->headers[$name][1]);
169      * @param string $name
172     function getHeaderAsArray($name) {  argument
174         $name = strtolower($name);
176         if (isset($this->headers[$name])) {
177             return $this->headers[$name][1];
191      * @param string $name
195     function setHeader($name, $value) {  argument
197         $this->headers[strtolower($name)] = [$name, (array)$value];
214         foreach ($headers as $name => $value) {
215             $this->setHeader($name, $value);
227      * @param string $name
231     function addHeader($name, $value) {  argument
233         $lName = strtolower($name);
241                 $name,
258         foreach ($headers as $name => $value) {
259             $this->addHeader($name, $value);
274     function removeHeader($name) {  argument
276         $name = strtolower($name);
277         if (!isset($this->headers[$name])) {
280         unset($this->headers[$name]);