Question

I want to set attribute for a stdClass object in a single statement.
I don’t have any idea about it. I know the following things

$obj = new stdClass;
$obj->attr = 'loremipsum';

It takes two statements.

$obj = (object) array('attr'=>'loremipsum');

It takes single statement but it is not direct method.

$obj = new stdClass(array('attr'=>'loremipsum'));

It is not working.

Answer 1

$obj = (object) array(
    'attr'=>'loremipsum'
);

Actually, that’s as direct as it’s going to get. Even a custom constructor won’t be able to do this in a single expression.

The (object) cast might actually be a simple translation from an array, because internally the properties are stored in a hash as well.

You could create a base class like this:

abstract class MyObject
{
    public function __construct(array $attributes = array())
    {
        foreach ($attributes as $name => $value) {
            $this->{$name} = $value;
        }
    }
}

class MyWhatever extends MyObject
{
}

$x = new MyWhatever(array(
    'attr' => 'loremipsum',
));

Doing so will lock up your constructor though, requiring each class to call its parent constructor when overridden.