php work with objects code example

Example 1: php object

$o= new \stdClass();
$o->a = 'new object';

OR

$o = (object) ['a' => 'new object'];

Example 2: php object

$obj = [
  "example1" => 1,
  "example2" => "two",
  "example3" => [
    "example4": true
  ]
]