Extract Data from a Website using PHP - php

Question

I am trying to get PHP to extract the TOKEN (the uppercase one), USERID (uppercase), and the USER NAME (uppercase) from a web page with the following text.
{
"rsp":{
"stat":"ok",
"auth":{
"token":"**TOKEN**",
"perms":"read",
"user":{
"id":"**USERID**",
"username":"**USER NAME**",
"fullname":"**NAME OF USER**"
}
}
}
}
(This is from the RTM api, getting the authentication token of the user).
How would I go about doing this? Thanks!
EDIT:
how would i get task name "Buy Milk!" & the due date of the task"2011-02-28T.." using json_decode and php here? Thanks!
{
"rsp":{
"stat":"ok",
"tasks":{
"rev":"REV_NUMBER",
"list":{
"id":"ID_NUMBER",
"taskse­­ries":{
"id":"ID_NUMBER",
"created":"2010-11-16T00:01:50Z",
"modified":"2011-02-28T05:09:36Z",
"name":"Buy Milk!",
"source":"js",
"url":"",
"location_id":"",
"rrule":{
"every":"1",
"$t":"FREQ=W­­EEKLY;INTERVAL=1"
},
"tags":[
],
"participants":[
],
"notes":[
],
"task":{
"id":"ID_NUMBER" ­­,
"due":"2011-02-28T05:00:00Z",
"has_due_time":"0",
"added":"2011-02-21T05:04:49Z",
"completed":"",
"deleted":"",
"priority":"2",
"postponed":"0",
"estima­­te":""
}
}
}
}
}
}

Answer 1

As Delan suggested, use json_decode. Here is an example of how you would use json_decode to extract the information you require.
// your json string
$string = '{"rsp":{"stat":"ok","auth":{"token":"**TOKEN**","perms":"read","user":{"id":"**USERID**","username":"**USER NAME**","fullname":"**NAME OF USER**"}}}}';
// parse json string to an array
$array = json_decode($string, true);
// auth token
echo $array['rsp']['auth']['token'];
// user details
echo $array['rsp']['auth']['user']['id'];
echo $array['rsp']['auth']['user']['username'];
echo $array['rsp']['auth']['user']['fullname'];
UPDATE I've updated the code to use json_decode's $assoc parameter to convert from an object to an assoc array.
ANOTHER UPDATE To answer your updated question..
how would i get task name "Buy Milk!" & the due date of the task"2011-02-28T.." using json_decode and php here? Thanks!
This code would work to get the values that you want.
//string(9) "Buy Milk!"
echo $array['rsp']['tasks']['list']['taskseries']['name'];
// string(20) "2011-02-28T05:00:00Z"
echo $array['rsp']['tasks']['list']['taskseries']['task']['due'];
This code isn't ideal, but it gets the job done for you.

Answer 2

If the string is JSON, json_decode in PHP will do the trick. It's was implemented in PHP 5.2.0.
http://www.php.net/manual/en/function.json-decode.php