Output value of nested arrays?

[chrisburton]

@traq No, I’m using 5.3

Edit: I already changed that to $response.

[__]

I updated my demo to be compatible with PHP 5.3. Sorry about that. You can try it again.

In your own script, did you *completely remove* my demo code (everything below `## EXAMPLE USAGE ##`) and replace it with

$cb = new twitter_user( $response );

?

[chrisburton]

@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
* @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 ) && is_array( $response ) ){
// you might want to verify other|all values exist,
// beyond just , 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
,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 );

[__]

@chrisburton

…and `$response` contains the array from twitter (the array you posted at the beginning of this thread)?

are you still getting the “unexpected [” error?

[chrisburton]

@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:UsersChrisDesktopwampwwwauthexamplecallback.php on line 189

Catchable fatal error: Argument 1 passed to twitter_user::__construct() must be an array, null given, called in C:UsersChrisDesktopwampwwwauthexamplecallback.php on line 189 and defined in C:UsersChrisDesktopwampwwwauthexamplecallback.php on line 131

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

[__]

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

Change that to `$cb = new twitter_user( $response );`

If you still get an error, use `var_dump( $response )` to make sure $response really is the array we’re looking for :)

[chrisburton]

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

[chrisburton]

@traq `$response` is correct. It outputs the following:

array (size=3)
‘auth’ =>
array (size=5)
‘uid’ => int 50799167
‘info’ =>
array (size=6)
‘name’ => string ‘Chris Burton’ (length=12)
‘nickname’ => string ‘chrisburton’ (length=11)
‘urls’ =>
array (size=2)…

[__]

can you zip it all to me?

[chrisburton]

@traq Sent. Thanks again.

[__]

@chrisburton

Try putting this

// create new twitter_user
$cb = new twitter_user( $response );
print “Hi, my name is {$cb->name}.
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.

[chrisburton]

@traq Hey, no rush. Unless I’m doing something wrong, I’m still getting an error.

[__]

@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.)

[__]

Okay, I’ve discovered the problem with my [twitter_user class](https://gist.github.com/4536162), and provided a solution.

(1) The flags I use for [json_encode()](http://php.net/json_encode) aren’t supported in PHP versions less-than 5.4.

… The solution is to remove the flags.

(2) The function [json_last_error()](http://php.net/json_last_error) did not exist in PHP versions less-than 5.3.

… The “solution” (and I use the term loosely) is to remove the error-check and “hope for the best.” A better solution is to **upgrade your PHP version**.

@chrisburton

You say you’re using 5.3, correct? Simply commenting out this line

,JSON_BIGINT_AS_STRING|JSON_UNESCAPED_UNICODE

should solve your problem. If not, you can also replace this line

if( json_last_error() === JSON_ERROR_NONE ){

with this instead

if( true ){

I have a [working example here](http://crocilgator.net/example/twitter), if you’d like to see the result.

[chrisburton]

@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?

[Author]

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