<?php
                        				
                        					$input = "What a fabulous hotel, the dinner was excellent.";
                        					$langID = "en";
                        
                        					$xmlResponse = wsSentAnalysisExample($input, $langID);
                        
                        					$xmlObject = simplexml_load_string($xmlResponse);
                        
                        					// Do something here with the result
                        
                        					function wsSentAnalysisExample($text, $langID) {
                        
                        						$wsServiceCode = 'nlp:sen:v1';
                        						$pText = $text;
                        						$pLangID = $langID;
                        
                        						$publicAccessID = '0123456789012345678901234567890123456789012345678901234567890123';
                        						$secretAuthKey =  '9876543210987654321098765432109876543210987654321098765432109876';
                        						
                        						$strToHash = $wsServiceCode . $pText . $pLangID;
                        
                        						$authWSControlKey = hash_hmac('sha256', $strToHash, $secretAuthKey);
                        
                        						$data = array(
                        							'pText' => $pText,
                        							'pLangID' => $pLangID,
                        							'publicAccessID' => $publicAccessID,							
                        							'authWSControlKey' => $authWSControlKey
                        						);
                        
                        						$data = http_build_query($data);
                        
                        						// US-Location Endpoint
                        						$endPoint = "http://us.ws.intellexere.com/core/nlp/sen/v1";
                        						// EU-Location Endpoint
                        						// $endPoint = "http://eu.ws.intellexere.com/core/nlp/sen/v1";
                        
                        						$reply = do_post_request($endPoint, $data);
                        
                        						return($reply);
                        
                        					}
                        
                        					function do_post_request($url, $data, $optional_headers = null) {
                        
                        						$params = array('http' => array(
                        							'method' => 'POST',
                        							'content' => $data
                        						));
                        
                        						if ($optional_headers !== null) {
                        							$params['http']['header'] = $optional_headers;
                        						}
                        
                        						$ctx = stream_context_create($params);
                        
                        						$fp = @fopen($url, 'rb', false, $ctx);
                        						if (!$fp) {
                        							throw new Exception("Error: $url, $php_errormsg");
                        						}
                        
                        						$response = @stream_get_contents($fp);
                        
                        						if ($response === false) {
                        							throw new Exception("Error: $url, $php_errormsg");
                        						}
                        
                        						return $response;
                        					}
                        				?>