Description
mixed 
mb_http_output ( [string encoding] )
     If encoding is set,
     mb_http_output() sets HTTP output character
     encoding to encoding. Output after this
     function is converted to encoding.
     mb_http_output() returns
     TRUE for success and FALSE
     for failure.
    
     If encoding is omitted,
     mb_http_output() returns current HTTP output
     character encoding.
    
     See also mb_internal_encoding(),
     mb_http_input(),
     mb_detect_order().