http_match_request_header(PECL pecl_http >= 0.10.0) http_match_request_header — Match any header Описание
   bool http_match_request_header
    ( string $header
   , string $value
   [, bool $match_case = false
  ] ) 
  Match an incoming HTTP header. Список параметров
 
 Возвращаемые значенияReturns TRUE if header value matches, else FALSE.  | 
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