Re-add support for HTTP file uploads

ext/curl/curl.c

@@ -791,9 +791,16 @@ PHP_FUNCTION(curl_setopt)
 				convert_to_string_ex(current);
 
 				zend_hash_get_current_key_ex(postfields, &string_key, &string_key_len, &num_key, 0, NULL);
-
-				error = curl_formadd(&first, &last, CURLFORM_COPYNAME, string_key, 
-									 CURLFORM_PTRCONTENTS, Z_STRVAL_PP(current), CURLFORM_END);
+				
+				postval = Z_STRVAL_PP(current);
+				if (*postval == '@') {
+					error = curl_formadd(&first, &last, CURLFORM_COPYNAME, string_key, 
+					                     CURLFORM_FILE, ++postval, CURLFORM_END);
+				}
+				else {
+					error = curl_formadd(&first, &last, CURLFORM_COPYNAME, string_key, 
+										 CURLFORM_PTRCONTENTS, postval, CURLFORM_END);
+				}
 			}
 
 			if (error != CURLE_OK) {