php - Executing curl request -

i'm new curl , referring example : http://www.php.net/manual/en/book.curl.php#99979

i wanted write following curl request:

curl "http://localhost:8080/solr/update/extract?literal.id=doc1&commit=true" -f "myfile=@test.pdf" 

using curl predefined constants. (http://www.php.net/manual/en/curl.constants.php)

i started off writing:

$tucurl = curl_init();  curl_setopt($tucurl, curlopt_url, "http://localhost:8080/solr/update/extract?literal.id=doc1&commit=true");   

but, after that, couldn't figure out how write -f "myfile=@test.pdf" part.