file_get_contents prints text not sound - php

Question

I'm trying to get a sound file to be printed on a php page. I'm using the code below. I thought when I run this script it would have shown a sound file to download but it prints some text. What do you think I should do to fix this?
<?php
$mylanguage=$_GET["mylanguage"];
$soundtext=$_GET["soundtext"];
echo stream_get_contents("http://api.microsofttranslator.com/V2/http.svc/Speak?appId=9CF5D9435A249BB484EC6DB50FFFB94C6733DEFB&language=$mylanguage&format=audio/wav&text=$soundtext");
?>

Answer 1

Send the correct headers. By default, PHP sends Content-Type: text/html. If you send something else, you have to send the headers by yourself.
What kind of sound file is this?

Answer 2

From PHP.net:
stream_get_contents
(PHP 5)
stream_get_contents — Reads remainder of a stream into a string
So it just returns a string representation of the file content. Not the file itself.

Answer 3

stream_get_contents does not work that way. It requires existing opened handled.
What you need is this,
$url = "http://api.microsofttranslator.com/V2/http.svc/Speak?appId=9CF5D9435A249BB484EC6DB50FFFB94C6733DEFB&language=$mylanguage&format=audio/wav&text=$soundtext";
$fh = fopen($url, "rb"); // this rb makes it binary safe
$audio_data = stream_get_contents($fh)
To echo it to client you need appropriate Content-Type header. Check /etc/mime.types to grab your proper content type.
Suppose its a wave audio. use the following code.
header("Content-type: audio/x-wav");
echo $audio_data;

Answer 4

This is the example on the ms api site: http://msdn.microsoft.com/en-us/library/ff512420.aspx#phpexample
Within the last try block you can see the header set header('Content-Type: audio/mp3');
<?php
class AccessTokenAuthentication {
/*
* Get the access token.
*
* #param string $grantType Grant type.
* #param string $scopeUrl Application Scope URL.
* #param string $clientID Application client ID.
* #param string $clientSecret Application client ID.
* #param string $authUrl Oauth Url.
*
* #return string.
*/
function getTokens($grantType, $scopeUrl, $clientID, $clientSecret, $authUrl){
try {
//Initialize the Curl Session.
$ch = curl_init();
//Create the request Array.
$paramArr = array (
'grant_type' => $grantType,
'scope' => $scopeUrl,
'client_id' => $clientID,
'client_secret' => $clientSecret
);
//Create an Http Query.//
$paramArr = http_build_query($paramArr);
//Set the Curl URL.
curl_setopt($ch, CURLOPT_URL, $authUrl);
//Set HTTP POST Request.
curl_setopt($ch, CURLOPT_POST, TRUE);
//Set data to POST in HTTP "POST" Operation.
curl_setopt($ch, CURLOPT_POSTFIELDS, $paramArr);
//CURLOPT_RETURNTRANSFER- TRUE to return the transfer as a string of the return value of curl_exec().
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, TRUE);
//CURLOPT_SSL_VERIFYPEER- Set FALSE to stop cURL from verifying the peer's certificate.
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
//Execute the cURL session.
$strResponse = curl_exec($ch);
//Get the Error Code returned by Curl.
$curlErrno = curl_errno($ch);
if($curlErrno){
$curlError = curl_error($ch);
throw new Exception($curlError);
}
//Close the Curl Session.
curl_close($ch);
//Decode the returned JSON string.
$objResponse = json_decode($strResponse);
if ($objResponse->error){
throw new Exception($objResponse->error_description);
}
return $objResponse->access_token;
} catch (Exception $e) {
echo "Exception-".$e->getMessage();
}
}
}
Class HTTPTranslator {
/*
* Create and execute the HTTP CURL request.
*
* #param string $url HTTP Url.
* #param string $authHeader Authorization Header string.
*
* #return string.
*
*/
function curlRequest($url, $authHeader){
//Initialize the Curl Session.
$ch = curl_init();
//Set the Curl url.
curl_setopt ($ch, CURLOPT_URL, $url);
//Set the HTTP HEADER Fields.
curl_setopt ($ch, CURLOPT_HTTPHEADER, array($authHeader));
//CURLOPT_RETURNTRANSFER- TRUE to return the transfer as a string of the return value of curl_exec().
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, TRUE);
//CURLOPT_SSL_VERIFYPEER- Set FALSE to stop cURL from verifying the peer's certificate.
curl_setopt ($ch, CURLOPT_SSL_VERIFYPEER, False);
//Execute the cURL session.
$curlResponse = curl_exec($ch);
//Get the Error Code returned by Curl.
$curlErrno = curl_errno($ch);
if ($curlErrno) {
$curlError = curl_error($ch);
throw new Exception($curlError);
}
//Close a cURL session.
curl_close($ch);
return $curlResponse;
}
}
try {
//Client ID of the application.
$clientID = "clientid";
//Client Secret key of the application.
$clientSecret = "clientsecret";
//OAuth Url.
$authUrl = "https://datamarket.accesscontrol.windows.net/v2/OAuth2-13/";
//Application Scope Url
$scopeUrl = "http://api.microsofttranslator.com";
//Application grant type
$grantType = "client_credentials";
//Create the AccessTokenAuthentication object.
$authObj = new AccessTokenAuthentication();
//Get the Access token.
$accessToken = $authObj->getTokens($grantType, $scopeUrl, $clientID, $clientSecret, $authUrl);
//Create the authorization Header string.
$authHeader = "Authorization: Bearer ". $accessToken;
//Set the params.
$inputStr = "Welcome";
$language = 'en';
$params = "text=$inputStr&language=$language&format=audio/mp3";
//HTTP Speak method URL.
$url = "http://api.microsofttranslator.com/V2/Http.svc/Speak?$params";
//Set the Header Content Type.
header('Content-Type: audio/mp3');
//Create the Translator Object.
$translatorObj = new HTTPTranslator();
//Call the curlRequest.
$strResponse = $translatorObj->curlRequest($url, $authHeader);
echo $strResponse;
} catch (Exception $e) {
echo "Exception: " . $e->getMessage() . PHP_EOL;
}
?>