How to Decode a JSON String with Several Objects in PHP

How to decode a JSON String with several objects in PHP?

New answer

Re your revised question: foreach actually works with properties as well as with many-valued items (arrays), details here. So for instance, with the JSON string in your question:

$data = json_decode($json);
foreach ($data as $name => $value) {
    // This will loop three times:
    //     $name = inbox
    //     $name = sent
    //     $name = draft
    // ...with $value as the value of that property
}

Within your main loop over the properties, you can use an inner loop to go over the array entries each property points to. So for instance, if you know that each of the top-level properties has an array value, and that each array entry has a "firstName" property, this code:

$data = json_decode($json);
foreach ($data as $name => $value) {
    echo $name . ':'
    foreach ($value as $entry) {
        echo '  ' . $entry->firstName;
    }
}

...will show:

inbox:
  Brett
  Jason
  Elliotte
sent:
  Issac
  Tad
  Frank
draft:
  Eric
  Sergei

Old answer(s)

Begin edit
Re your comment:

Now I would like to know how to decode JSON string with several objects!

The example you posted does have several objects, they're just all contained within one wrapper object. This is a requirement of JSON; you cannot (for example) do this:

{"name": "I'm the first object"},
{"name": "I'm the second object"}

That JSON is not valid. There has to be a single top-level object. It might just contain an array:

{"objects": [
    {"name": "I'm the first object"},
    {"name": "I'm the second object"}
]}

...or of course you can give the individual objects names:

{
    "obj0": {"name": "I'm the first object"},
    "obj1": {"name": "I'm the second object"}
}

End edit

Your example is one object containing three properties, the value of each of which is an array of objects. In fact, it's not much different from the example in the question you linked (which also has an object with properties that have array values).

So:

$data = json_decode($json);
foreach ($data->programmers as $programmer) {
    // ...use $programmer for something...
}
foreach ($data->authors as $author) {
    // ...use $author for something...
}
foreach ($data->musicians as $musician) {
    // ...use $musician for something...
}

decode json array with multiple objects in php

Use json_decode() to decode a JSON string, like this:

$json_array = json_decode($json, true);
                                  ^ When TRUE, returned objects will be converted into associative arrays.

So your code should be like this:

// Here $json is your json string
$json_array = json_decode($json, true);

foreach($json_array as $key => $arrays){
    echo $key . "<br />";
    foreach($arrays as $array){
        foreach($array as $key => $value){
            echo $key . " => " . $value . "<br />";
        }
    }
    echo "<br />";
}

Output:

article_details
article_code => 000000000300028156
diff_amnt => 1
article_code => 000000000300028174
diff_amnt => 1
article_code => 000000000300028126
diff_amnt => 1

article
article_code => 000000000300028156
diff_amnt => 1
article_code => 000000000300028174
diff_amnt => 1
article_code => 000000000300028126
diff_amnt => 1 

Decoding multiple JSON objects in PHP

tidy your input, add commas after every json string, send like this:

{ "m_time" : "2015-04-07 11:37:35", "id" : "30", "msg" : "Hai there 1"},{ "m_time" : "2015-04-07 11:37:36", "id" : "31", "msg" : "Hai there 2"},{ "m_time" : "2015-04-07 11:37:37", "id" : "32", "msg" : "Hai there 3"},

php function

function json_decode_multi($s, $assoc = false, $depth = 512, $options = 0) {
    if(substr($s, -1) == ',')
        $s = substr($s, 0, -1);
    return json_decode("[$s]", $assoc, $depth, $options);
}

var_dump(json_decode_multi('{ "m_time" : "2015-04-07 11:37:35", "id" : "30", "msg" : "Hai there 1"},{ "m_time" : "2015-04-07 11:37:36", "id" : "31", "msg" : "Hai there 2"},{ "m_time" : "2015-04-07 11:37:37", "id" : "32", "msg" : "Hai there 3"},'));

output:

array(3) {
  [0] =>
  class stdClass#1 (3) {
    public $m_time =>
    string(19) "2015-04-07 11:37:35"
    public $id =>
    string(2) "30"
    public $msg =>
    string(11) "Hai there 1"
  }
  [1] =>
  class stdClass#2 (3) {
    public $m_time =>
    string(19) "2015-04-07 11:37:36"
    public $id =>
    string(2) "31"
    public $msg =>
    string(11) "Hai there 2"
  }
  [2] =>
  class stdClass#3 (3) {
    public $m_time =>
    string(19) "2015-04-07 11:37:37"
    public $id =>
    string(2) "32"
    public $msg =>
    string(11) "Hai there 3"
  }
}

Keep in mind: the protocol design is not stable. @socket_recv($changed_socket, $buf, READ_SIZE, 0) may read half a string(broken) if it meets max READ_SIZE. If the data decoding failed, you should keep the last received data, and read more data to append to it and retry.

php json decode object with array of multiple objects

$myArray = json_decode($json, true);

var_dump($myArray['id']);
var_dump($myArray['user'][0]['fname']);

How to convert a string to JSON object in PHP

What @deceze said is correct, it seems that your JSON is malformed, try this:

{
    "Coords": [{
        "Accuracy": "30",
        "Latitude": "53.2778273",
        "Longitude": "-9.0121648",
        "Timestamp": "Fri Jun 28 2013 11:43:57 GMT+0100 (IST)"
    }, {
        "Accuracy": "30",
        "Latitude": "53.2778273",
        "Longitude": "-9.0121648",
        "Timestamp": "Fri Jun 28 2013 11:43:57 GMT+0100 (IST)"
    }, {
        "Accuracy": "30",
        "Latitude": "53.2778273",
        "Longitude": "-9.0121648",
        "Timestamp": "Fri Jun 28 2013 11:43:57 GMT+0100 (IST)"
    }, {
        "Accuracy": "30",
        "Latitude": "53.2778339",
        "Longitude": "-9.0121466",
        "Timestamp": "Fri Jun 28 2013 11:45:54 GMT+0100 (IST)"
    }, {
        "Accuracy": "30",
        "Latitude": "53.2778159",
        "Longitude": "-9.0121201",
        "Timestamp": "Fri Jun 28 2013 11:45:58 GMT+0100 (IST)"
    }]
}

Use json_decode to convert String into Object (stdClass) or array: http://php.net/manual/en/function.json-decode.php

[edited]

I did not understand what do you mean by "an official JSON object", but suppose you want to add content to json via PHP and then converts it right back to JSON?

assuming you have the following variable:

$data = '{"Coords":[{"Accuracy":"65","Latitude":"53.277720488429026","Longitude":"-9.012038778269686","Timestamp":"Fri Jul 05 2013 11:59:34 GMT+0100 (IST)"},{"Accuracy":"65","Latitude":"53.277720488429026","Longitude":"-9.012038778269686","Timestamp":"Fri Jul 05 2013 11:59:34 GMT+0100 (IST)"},{"Accuracy":"65","Latitude":"53.27770755361785","Longitude":"-9.011979642121824","Timestamp":"Fri Jul 05 2013 12:02:09 GMT+0100 (IST)"},{"Accuracy":"65","Latitude":"53.27769091555766","Longitude":"-9.012051410095722","Timestamp":"Fri Jul 05 2013 12:02:17 GMT+0100 (IST)"},{"Accuracy":"65","Latitude":"53.27769091555766","Longitude":"-9.012051410095722","Timestamp":"Fri Jul 05 2013 12:02:17 GMT+0100 (IST)"}]}';

You should convert it to Object (stdClass):

$manage = json_decode($data);

But working with stdClass is more complicated than PHP-Array, then try this (use second param with true):

$manage = json_decode($data, true);

This way you can use array functions: http://php.net/manual/en/function.array.php

adding an item:

$manage = json_decode($data, true);

echo 'Before: <br>';
print_r($manage);

$manage['Coords'][] = Array(
    'Accuracy' => '90'
    'Latitude' => '53.277720488429026'
    'Longitude' => '-9.012038778269686'
    'Timestamp' => 'Fri Jul 05 2013 11:59:34 GMT+0100 (IST)'
);

echo '<br>After: <br>';
print_r($manage);

remove first item:

$manage = json_decode($data, true);
echo 'Before: <br>';
print_r($manage);
array_shift($manage['Coords']);
echo '<br>After: <br>';
print_r($manage);

any chance you want to save to json to a database or a file:

$data = '{"Coords":[{"Accuracy":"65","Latitude":"53.277720488429026","Longitude":"-9.012038778269686","Timestamp":"Fri Jul 05 2013 11:59:34 GMT+0100 (IST)"},{"Accuracy":"65","Latitude":"53.277720488429026","Longitude":"-9.012038778269686","Timestamp":"Fri Jul 05 2013 11:59:34 GMT+0100 (IST)"},{"Accuracy":"65","Latitude":"53.27770755361785","Longitude":"-9.011979642121824","Timestamp":"Fri Jul 05 2013 12:02:09 GMT+0100 (IST)"},{"Accuracy":"65","Latitude":"53.27769091555766","Longitude":"-9.012051410095722","Timestamp":"Fri Jul 05 2013 12:02:17 GMT+0100 (IST)"},{"Accuracy":"65","Latitude":"53.27769091555766","Longitude":"-9.012051410095722","Timestamp":"Fri Jul 05 2013 12:02:17 GMT+0100 (IST)"}]}';

$manage = json_decode($data, true);

$manage['Coords'][] = Array(
    'Accuracy' => '90'
    'Latitude' => '53.277720488429026'
    'Longitude' => '-9.012038778269686'
    'Timestamp' => 'Fri Jul 05 2013 11:59:34 GMT+0100 (IST)'
);

if (($id = fopen('datafile.txt', 'wb'))) {
    fwrite($id, json_encode($manage));
    fclose($id);
}

Decoding multiple JSON responses using PHP

First check that you are recieving output from var_dump(file_get_contents($url)).

Then verify that the string returned is valid JSON. Explained here by Nordenheim

Once you can confirm its valid, inspect the JSON decoded data to see how to access the correct value.

var_dump(json_decode(file_get_contents($url)));

so the following should be what your looking for;

$data = json_decode(file_get_contents($url));
echo $data['data'][0]['id'];;

Split Json object into multiple json objects in PHP

Try this loop over each record and save it in result.

$json=json_decode($str,true);

array_map(function($value) use (&$results){
    $results[$value['id']]=json_encode($value['items']);
    return $results;
}
,$json['results']);

print_r($results);

output

Array ( 
[001] => {"item11":"value1","item12":"value2","item13":"value3"} 
[002] => {"item21":"value1","item22":"value2","item23":"value3"} 
[003] => {"item31":"value1","item32":"value2","item33":"value3"} )

How to decode multi-layers nested JSON String and display in PHP?

The JSON you provided (in your question) is malformed and using json_decode() on it will result in NULL. Thus nothing will happen when you try to access the decoded object because it doesn't exist.

The full JSON you provided is valid and the reason why your code didn't yield any results is because in items there is an "inner"-array:

(...) 
["items"] => array(1) {
    [0] => array(4) {
//  ^^^^^^^^^^^^^^^^^
        ["update_timestamp"] => string(25) "2017-05-02T09:21:18+08:00" 
        ["timestamp"] => string(25) "2017-05-02T09:07:00+08:00" 
        ["valid_period"] => array(2) { 
            ["start"] => string(25) "2017-05-02T09:00:00+08:00" 
            ["end"] => string(25) "2017-05-02T11:00:00+08:00" 
        } 
        ["forecasts"] => array(47) { 
            [0] => array(2) { 
                ["area"] => string(10) "Ang Mo Kio" 
                ["forecast"] => string(19) "Partly Cloudy (Day)" 
            }
            (...)

You'll have to access that array through key 0, for arrays it will look like this:

$data = json_decode($json, true);
echo $data['items'][0]['forecasts'][0]['area'];
//                 ^^^

And for objects like this:

$data = json_decode($json);
echo $data->items[0]->forecasts[0]->area;
//               ^^^

The second 0 changes the location (the different arrays in the forecasts array).

You can check the output here (array approach) and here (object approach).

PHP: Read JSON file with multiple objects in array and split by objects

Decode then encode:

$str = '[{"color":1,"blocks":[[{"id":64}]]},{"color":1,"blocks":[[{"id":64},{"id":64}],[{"id":1}]]},{"color":2,"blocks":[[{"id":64},{"id":64}],[{"id":1}]]}]';
$config = json_decode($str, true);
$json = json_encode($config[2]);
print $json;

This will print what you want.

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