How to extract each of the items from an array? laravel/php

Question

I have 50 items in an array that looks something like this:

     array:50 [▼
      0 => {#253 ▼
        +"message": "message_1"
        +"created_time": {#254 ▼
          +"date": "2016-03-03 07:54:05.000000"
          +"timezone_type": 1
          +"timezone": "+00:00"
        }
        +"id": "167633226631991_1051771021551536"
      }
      1 => {#255 ▼
        +"message": "message_2"
        +"created_time": {#256 ▼
          +"date": "2016-03-02 13:35:26.000000"
          +"timezone_type": 1
          +"timezone": "+00:00"
        }
        +"id": "167633226631991_1051313571597281"
      }
    ]

I need to grab each variable within the array. But I keep getting an error that reads:

Undefined property: stdClass::$message

Im not sure what Im missing I've tried doing:

     foreach ($posts as $post) {
            $test = array('message' => $post->message );
     }

and also

$a = -1;

$alpha = 0;

$omega = count($posts);

$empty_array = array();

foreach (range($alpha,$omega) as $i) {
  ++$a;
  $test = $posts[$a]->message;
  array_push($empty_array, $test);
  }

but I'm getting the same error. Im using laravel 5.2.

Update: The array is coming from facebook's graph API. I am converting the json format using:

$posts = json_decode($userNode['posts']);

Doing this then displays the array:50 as above.

@RaviHirani I tried $post['message'] I get this error Cannot use object of type stdClass as array — kevinabraham
– kevinabraham, Commented Mar 6, 2016 at 9:06
@Joseph if I dd($post) I get {#253 ▼ +"message": "message_1" +"created_time": {#254 ▼ +"date": "2016-03-03 07:54:05.000000" +"timezone_type": 1 +"timezone": "+00:00" } +"id": "167633226631991_1051771021551536" } — kevinabraham
– kevinabraham, Commented Mar 6, 2016 at 9:07
Where is this array coming from in the first place, and what is the code used to generate it? Please update this information in the question rather than as a comment as it's easier to read. — Joseph
– Joseph, Commented Mar 6, 2016 at 9:19

Joseph · Accepted Answer · 2016-03-07 06:28:33Z

2

As the array is an array of objects, you are referencing it correctly when you type $post->message. Doing $post['message'] won't work because it is not an array of arrays.

I believe that the Undefined property: stdClass::$message error is coming about because some of the objects in your $posts array have an empty +message or a non-existent +message

The best way to deal with this is to use an isset(). However, you also need to change your $test to $test[] to stop it from being overwritten each time it loops.

The code:

    foreach ($posts as $post) {
        isset($post->message) ? $test[] = array('message' => $post->message ) : null;
    }

After that, dd($test) will provide you with an array of arrays with the message in.

If you actually just wanted a plain array of messages then do this:

    foreach ($posts as $post) {
        isset($post->message) ? $test[] = $post->message : null;
    }

edited Mar 7, 2016 at 6:28

answered Mar 6, 2016 at 9:45

Joseph

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7 Comments

kevinabraham Over a year ago

Thanks a lot! Worked like a charm.

Ravi Hirani Over a year ago

@Joseph: Nice answer brother :) Perhaps in laravel object can be accessible as array also. stackoverflow.com/questions/22897919/…

Joost Over a year ago

You can also just use the Laravel helper array_pluck($posts, 'message') :)

Joseph Over a year ago

@RaviHirani You're right, in some cases they are interchangeable. However, in this specific case, accessing $post['message'] would result in Cannot use object of type stdClass as array

Ravi Hirani Over a year ago

Agree with you my friend. This is not the case :-) BTW my name is Ravi not others as you have mentioned in your answer ;-)

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