How to get the facebook app_access_token? - facebook

Question

I want to create a score for my Facebook app and I know you need an app_access_token for that. Some posts say, the only way to get an app_access_token is via PHP, like this:
<?php
$APPLICATION_ID = YOUR_APP_ID;
$APPLICATION_SECRET = YOUR_APP_SECRET;
$token_url = "https://graph.facebook.com/oauth/access_token?" .
"client_id=" . $APPLICATION_ID .
"&client_secret=" . $APPLICATION_SECRET .
"&grant_type=client_credentials";
$app_token = file_get_contents($token_url);
?>
Is the token you get via this PHP script different from the so called "app token" you find on
https://developers.facebook.com/tools/access_token/?
(looks like this: APPLICATION_ID|lvATVyhp1m.............w)
and is acually the same you get by calling
https://graph.facebook.com/oauth/access_token?client_id=CLIENT_ID&client_secret=CLIENT_SECRET&grant_type=client_credentials directly.
So why must this call be made via PHP?

Answer 1

You can get token by various ways
<a href='https://www.facebook.com/dialog/oauth?client_id=2926561407xxxxx&redirect_uri=http://localhost:8080/fb/getCode.html&rcount=1&scope=email,read_stream'>Login</a>
It will return the token through URL you can get it by:
function getURLParameters(access_token)
{
var sURL = window.document.URL.toString();
if (sURL.indexOf("?") > 0)
{
var arrParams = sURL.split("?");
var arrURLParams = arrParams[1].split("&");
var arrParamNames = new Array(arrURLParams.length);
var arrParamValues = new Array(arrURLParams.length);
var i = 0;
for (i=0;i<arrURLParams.length;i++)
{
var sParam = arrURLParams[i].split("=");
arrParamNames[i] = sParam[0];
if (sParam[1] != "")
arrParamValues[i] = unescape(sParam[1]);
else
arrParamValues[i] = "No Value";
}
for (i=0;i<arrURLParams.length;i++)
{
if(arrParamNames[i] == "code")
{
code = arrParamValues[i];
return arrParamValues[i];
}
}
return "No Parameters Found";
}
}
getURLParameters();