<?php
$array = [
'test1' => ['name' => 'alex', 'text' => 'sometext', 'attr' => [
'attr1' => 'sex',
'attr2' => 'height',
'attr3' => 'weight',
],
],
'test2' => ['name' => 'alex', 'text' => 'sometext'],
'test3' => ['name' => 'alex', 'text' => 'sometext'],
];
// your code goes here
echo $object->test1->attr->attr1;
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