(PECL event >= 1.4.0-beta)
EventHttpRequest::addHeader — Adds an HTTP header to the headers of the request
$key
   , 
    string
     $value
   , 
    int
     $type
   ): boolAdds an HTTP header to the headers of the request.
key
    Header name.
value
    Header value.
type
    
      One of
      
       EventHttpRequest::*_HEADER constants
      .
     
   Returns true on success or false on failure.