How to iterate through a nested stdClass? [duplicate]

Asked 29/4, 2013 at 20:37 Answered 14/9, 2020 at 9:32

I have an object like this:

I need to get the id and name in an HTML table, but I seem to have a hard time iterating through this object. TIA. I understand that I need to get to the Values Array, and then to the group object, but I trip over the transitions between object and array and foreach vs index based iteration.

For example I tried this:

foreach ($res as $values) { print "\n"; print_r ($values); }

It iterates trough the object, but it also gives me useless

10 0 37

Impetuous answered 29/4, 2013 at 20:37 Comment(6)

Will you show what you tried and explain how your attempt did not match your expectations? – Giustino 29/4, 2013 at 20:38

sure. For example I tried this: foreach ($res as $values) { print "\n"; print_r ($values); } it iterates trough the object, but it also gives me useless 10 0 37 – Impetuous 29/4, 2013 at 20:40

foreach ($object->values as $arr) .... – Whipcord 29/4, 2013 at 20:43

Thanks @adeneo, This got me further: foreach ($res->values as $values) { print "\n"; foreach ($values->group as $groups) { but I get stuck here. $groups is not an array. If I try to access it by index I get 5C 2D 1S 3C 4B 3I 5I 6S 4I 4M ... – Impetuous 29/4, 2013 at 21:8

@MorDeror - posted some code, try that = – Whipcord 29/4, 2013 at 21:14

Side note: It looks like this is the result of a json_decode($json_string) call. This function offers the option to return an associative array rather than a stdClass object by calling it as follows: json_decode($json_string, true). Using this, you can traverse your data structure by array access all the way, which an be easier in some cases. In your case, you'd go foreach ($res['values'] as $value) { print_r($value); }, which will actually print the array the way you expect it to. You can also access the id with $value['group']['id']. – Cata 24/11, 2020 at 14:29

echo "<table>"

foreach ($object->values as $arr) {
    foreach ($arr as $obj) {
        $id   = $obj->group->id;
        $name = $obj->group->name;

        $html  = "<tr>";
        $html .=    "<td>Name : $name</td>";
        $html .=    "<td>Id   : $id</td>";
        $html .= "</tr>";
    }
}

echo "</table>";

Whipcord answered 29/4, 2013 at 21:13 Comment(1)

There you go, I was just guessing the structure of a table there, but if you got it working, that's the important part. – Whipcord 29/4, 2013 at 21:36

Since this is the top result in Google if you search for iterate over stdclass it may be helpful to answer the question in the title:

You can iterate overa stdclass simply by using foreach:

$user = new \stdClass();
$user->flag = 'red';

foreach ($user as $key => $value) {
   // $key is `flag`
   // $value is `red`
}

Summand answered 14/9, 2020 at 9:32 Comment(0)

function objectToArray( $data ) 
{
    if ( is_object( $data ) ) 
        $d = get_object_vars( $data );
}

Convert the Object to array first like:

$results = objectToArray( $results );

and use

foreach( $results as result ){... ...}

Popcorn answered 3/8, 2014 at 4:23 Comment(1)

Where is the return statement? – Loewe 21/5, 2019 at 11:36

I know it's an old post , but for sake of others: when working with stdClass you should use Reflections:

  $obj = new ReflectionObject($object);

  $propeties = $obj->getProperties();

      foreach($properties as $property) {
        $name = $property->getName();  <-- this is the reflection class
        $value = $object->$name;       <--- $object is your original $object

            here you need to handle the result (store in array etc)



        }

Frisket answered 14/9, 2019 at 20:21 Comment(1)

Worked like a charm for me. Take not that this sample uses an interpolated object property name $object->$name, which is set in the line above. – Macmahon 18/8, 2020 at 23:6

foreach($res->values as $value) {
    print_r($value);
}

Elsi answered 29/4, 2013 at 21:2 Comment(0)

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