Question

I am working on a system, where I need to compare 2 arrays and echo the correct value

[1] => Array
        (
            [Message] => Array
                (
                    [id] => 4f8c74ce-8590-4e8b-a5ba-6f54b2158146
                    [user_id] => 1
                    [to_user_id] => 3
                    [created] => 2012-04-16 21:36:46
                    [last_message_id] => 8
                    [message_count] => 2
                )

            [MessageItem] => Array
                (
                    [0] => Array
                        (
                            [id] => 7
                            [message_id] => 4f8c74ce-8590-4e8b-a5ba-6f54b2158146
                            [user_id] => 1
                            [message] => Whola amigo
                            [read] => 0
                            [created] => 2012-04-16 21:36:46
                        )

                    [1] => Array
                        (
                            [id] => 8
                            [message_id] => 4f8c74ce-8590-4e8b-a5ba-6f54b2158146
                            [user_id] => 1
                            [message] => sdfsdfdsfdsfsdfds
                            [read] => 0
                            [created] => 2012-04-16 21:37:54
                        )

                )

        )

So.. I want to

ECHO ['MessageItem]['message'] WHERE ['MessageItem]['id'] == ['Message]['last_message_id']

Not sure how to achive this using php !?!

Thanks for any and all help!!

-Tom

Answer 1

This simple solution works for the example given:

$array = array(
            '1' => array(
                'Message' => array(
                    'id' => '4f8c74ce-8590-4e8b-a5ba-6f54b2158146',
                    'user_id' => 1,
                    'to_user_id' => 3,
                    'created' => '2012-04-16 21:36:46',
                    'last_message_id' => 8,
                    'message_count' => 2
                ),
                'MessageItem' => array(
                    array(
                        'id' => 7,
                        'message_id' => '4f8c74ce-8590-4e8b-a5ba-6f54b2158146',
                        'user_id' => 1,
                        'message' => 'Whola amigo',
                        'read' => 0,
                        'created' => '2012-04-16 21:36:46'
                    ),
                    array(
                        'id' => 8,
                        'message_id' => '4f8c74ce-8590-4e8b-a5ba-6f54b2158146',
                        'user_id' => 1,
                        'message' => 'sdfsdfdsfdsfsdfds',
                        'read' => 0,
                        'created' => '2012-04-16 21:37:54'
                    )
                )
        )
);



$searchKey = $array['1']['Message']['last_message_id'];

foreach ($array['1']['MessageItem'] as $messageItemArray) {
    if ($searchKey == $messageItemArray['id']) {
        echo $messageItemArray['message'];
    }
}