如何在Codeigniter中访问stdclass对象内的stdclass对象

Question

In the Cron controller I have written the following function:-

public function football() {
        $jsonData = file_get_contents('http://localhost/football/football/api/football_api.php');        

    }

$jsonData is returning the following object:-



    stdClass Object
(
    [callum-paterson] => stdClass Object
        (
            [id] => 1
            [unique_id] => callum-paterson
            [name] => Callum Paterson
            [club] => Cardiff City
            [position] => Defender
            [national_team_name] => Unknown
            [birthdate] => 1994-10-13
            [birthplace] => Unknown
            [nationality] => Unknown
            [preferred_foot] => Unknown
            [weight] => 76
            [height] => 183
            [shirt_number] => 13
            [real_position] => Full Back
            [real_position_side] => Right
            [country] => Scotland
            [photo_url] => https://img.footballindex.co.uk/callum-paterson-g-t1.jpg
        )

    [chicharito] => stdClass Object
        (
            [id] => 3
            [unique_id] => chicharito
            [name] => Chicharito
            [club] => West Ham United
            [position] => Forward
            [national_team_name] => Unknown
            [birthdate] => 1988-06-01
            [birthplace] => Guadalajara
            [nationality] => Mexico
            [preferred_foot] => Right
            [weight] => 73
            [height] => 175
            [shirt_number] => 17
            [real_position] => Striker
            [real_position_side] => Centre
            [country] => Mexico
            [photo_url] => https://img.footballindex.co.uk/javier-hernandez-g-t6.jpg
        )

$jsonData is returning 1064 records. Here I'm showing a few. so I want to print all the records(like id,unique_id,name etc.) inside the stdclass-object_index(like [callum-paterson] ).

I'm new to JSON. So I cannot do it. Any help will be appreciated. I tried foreach but it's not working.

Answer 1

Avoid using variable names that are the type of data. What they contain is more useful. $data is acceptable when the variable is not yet useful.

public function football() {
    $footballers = file_get_contents('http://localhost/football/football/api/football_api.php');

    foreach ($footballers as $footballer => $data) {
        $footballers[$footballer] = json_decode($data);
    }

    return $footballers;
}

Answer 2

I solved my own problem here is my solution:-

public function football() {
        header('Content-Type: application/json');
        $tmp = array();
        $footballers = json_decode(file_get_contents('http://localhost/football/football/api/football_api.php'));

        foreach ($footballers as $footballer => $data) {
            $tmp[] = $data->unique_id;
        }
        print_r($tmp);

    }

$tmp holds all the unique_ids. Like that You can print all the values.