(PECL pecl_http >= 0.12.0)
HttpResponse::getHeader — Get header
Get header(s) about to be sent.
Note: 다음 SAPI에서는 정상 작동하지 않을 수 있습니다: Apache2 w/PHP < 5.1.3.
specifies the name of the header to read; if empty or omitted, an associative array with all headers will be returned
Returns either a string containing the value of the header matching name, FALSE on failure, or an associative array with all headers.