apache_response_headers Fetch all HTTP response headers Description arrayapache_response_headers Returns an array of all Apache response headers. <function>apache_response_headers</function> example ]]> The above example will output something similar to: bytes [X-Powered-By] => PHP/4.3.8 ) ]]> ¬e.apache.nsapi-module; See also apache_request_headers, and headers_sent.