$search_query = 'PHP'; $results = $article_collection->find(['content' => new Regex($search_query, 'i')]);
$start_date = new DateTime('2021-01-01'); $end_date = new DateTime('2021-12-31'); $results = $article_collection->find(['published_date' => ['$gte' => $start_date, '$lte' => $end_date]]);
$author_name = 'John Doe'; $results = $article_collection->find(['author' => $author_name]);The package library used for article find may vary depending on the specific use case and project requirements. Some popular PHP libraries for working with databases and data retrieval include Doctrine DBAL, Propel, and Eloquent (part of the Laravel framework).