Do you know which value you need?

I was able to get it by doing this

  echo $auth['raw']['id'];

Just thought they're might be a better way. Maybe something like:

  echo $raw->screen_name;

@traq Couldn't I just use a foreach to return the values as variables?

http://davidwalsh.name/convert-key-value-arrays-standard-variables-php

I just want something that would be secure but also easy for me to understand at the same time.

@chrisburton I wanted to learn more about PHP arrays so I played with your example code.

Maybe you will find it useful.

http://phpfiddle.org/main/code/9gz-f2n

@chrisburton

$twitter_array needs to be the variable that contains the array you receive from twitter. Are you calling it something else in your code?

also, does the demo below the class work for you?

to explain further, undefined variable means that $twitter_array doesn't exist in your code before you try to use it in new twitter_user( $twitter_array ) - which is also why twitter_user is throwing an exception.

Now I am getting ( ! ) Parse error: syntax error, unexpected '[' ...

Sorry. You're not using PHP 5.4, are you?

@traq No, I'm using 5.3

Edit: I already changed that to $response.

@traq I believe so?

       /**
   * wraps info returned from twitter's "sign in with twitter" API.
   * add additional methods/properties as desired and use as a user class.
   *
   * @author Adrian Testa-Avila <github@custom-anything.com>
   * @copyright 2013 Adrian Testa-Avila
   * @license    creative commons attribution-sharealike
   *             http://creativecommons.org/licenses/by-sa/3.0/
   */
  class twitter_user{

  ##  NONPUBLIC PROPERTIES  ##

      /** 
       * object           this will hold the info you got from the twitter API. 
       *                  "protected" means it can't be accessed directly from outside the object
       *                   (e.g., like `echo $twitter_user->t`).
       *                  we do this so we can control how $t is accessed, using the __get() method below.
       */
      protected $t;

  ##  PUBLIC METHODS  ##

      /**
       * this method creates a new twitter_user object - 
       *  e.g., like `$chrisburton = new twitter_user( $response );`
       * it simply converts $response to an object and stores it in $this->t.
       * see the __get() method to see how you retrieve values.
       *
       * @param array $twitter_info   the info you got from twitter.
       */
      public function __construct( array $response ){
          if( !empty( $response['auth'] ) && is_array( $response['auth'] ) ){
              // you might want to verify other|all values exist,
              // beyond just ['auth'], but that's up to you.

              // converting the array into an object 
              //  makes it easier to access the values via our __get() method.
              // (using the json_* functions is an ugly hack, but works well.)
              $t = json_decode( 
                      json_encode( 
                          $response['auth']
                         ,JSON_BIGINT_AS_STRING|JSON_UNESCAPED_UNICODE 
                      ) 
                  );
              // make sure there were no errors
              if( json_last_error() === JSON_ERROR_NONE ){
                  // all good.
                  $this->t = $t;
              }else{
                  // throw an exception so you know something went wrong
                  throw new Exception( 'conversion to object failed' );
              }
          }else{
              // throw an exception so you know something went wrong
              throw new Exception( '$twitter_info is malformed' );
          }
      }

      /**
       * __get() is a "magic method" that runs 
       * whenever you try to access a nonpublic (or nonexistant) property.
       * we're going to use it to access the twitter array.
       * 
       * @param string $name     the name of the value asked for
       * @return mixed           the value that $name is mapped to, if it exists;
       *                         FALSE otherwise
       */
      public function __get( $name ){
          // first check if $name maps directly to a value in the twitter array:
          if( isset( $this->t->$name ) ){
              // this handles usage like `echo $chrisburton->uid;`
              return $this->t->$name;
          }
          // next, check if $name maps to a nested value:
          foreach( $this->t as $t ){
              if( isset( $t->$name ) ){
                  // this handles usage like `echo $chrisburton->nickname;`
                  // or even `echo $chrisburton->urls->twitter;`
                  // (but *not* `echo $chrisburton->twitter;` - that won't work).
                  return $t->$name;
              }
          }
          // finally, if nothing was found:
          return false;
      }
  }

  $cb = new twitter_user( $response );

@traq Yes, $response is the main array or whatever you call it.

I'm getting two errors on line 189 which is $cb = new twitter_user( $twitter_array );

  Notice: Undefined variable: twitter_array in C:\Users\Chris\Desktop\wamp\www\auth\example\callback.php on line 189

  Catchable fatal error: Argument 1 passed to twitter_user::__construct() must be an array, null given, called in C:\Users\Chris\Desktop\wamp\www\auth\example\callback.php on line 189 and defined in C:\Users\Chris\Desktop\wamp\www\auth\example\callback.php on line 131

Line 131 is: public function __construct( array $response ){

@traq Oops, my fault. Now I'm getting a ton of json errors. Will try the var_dump

can you zip it all to me?

@chrisburton

Try putting this

  // create new twitter_user
      $cb = new twitter_user( $response );
      print "Hi, my name is {$cb->name}.<br>Visit me at {$cb->urls->website}";

inside the else{} block where it says

  /**
    * It's all good. Go ahead with your application-specific authentication logic
    */

I'll look more in-depth this afternoon.

@chirsburton

no bother; I'm interested in this too (the whole Opauth/twitter thing).

Are your errors still the "undefined variable" and "catchable fatal error" on 189? Nothing else?

And have you tried the twitter_user class again (get a fresh copy, since I fixed the demo), by itself? (Just trying to narrow it down; the class demo works for me, without a hitch.)

@traq Wow. I checked my host's PHP version and I'm using PHP Version 5.2.17. I upgraded my localhost version to 5.3 due to a certain feature that gave me an error.

Really appreciate all of this. After reading some articles, I keep seeing if(isset()) being used for authenticating a twitter user. I'm concerned that I should have stuck with that or is this completely separate?

@traq I mean, as long as it's secure, I'm not worried about it. I just want to make sure the users info is not vulnerable. It looks like I have a lot to learn. By the way, when you get Kirby up and running, I'd love to see you create a plugin that does this.

Regarding Opauth class, I'm not sure. What I sent you is what I am still using. I just pasted your code below the code that Opauth comes with.

@traq - super forum props for helping Chris out with this. I've been following this thread and have admired your dedication to the problem!

@traq @TheDoc Yes, absolutely. I really appreciate all the help that you have given. I'm glad that we can both benefit from this as well. Thank you for everything.

My apologies for being MIA for the past couple of days. It's been stressful getting everything ready for this semester of college.

@traq Working 100%. Much easier to write also so that's a definite plus. Thanks again, I owe you one.