getallheaders() is an alias for
apache_request_headers(). It will return
an associative array of all the HTTP headers in the current
request. Please read the
apache_request_headers() documentation for more
information on how this function works.
注: In PHP 4.3.0, getallheaders() became an alias for apache_request_headers(). Essentially, it was renamed. This is because this function only works when PHP is compiled as an Apache Module.
See also
apache_request_headers().