How do you get the string value of a MongoID using PHP?

Believe this is what you're after.

$widget['_id']->{'$id'};

Something like this.

$widget = array('text' => 'Some text');
$this->mongo->db->insert($widget);
$widget['widgetId'] = $widget['_id']->{'$id'};
echo json_encode($widget);

You can also use:

(string)$widget['_id']

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