How to insert post programmatically in wordpress

Sometimes, we need to insert post to our blog through code. This case occur in condition for example when we need to insert more than 1 post in 1 time.
Here is the code to do that :

  // Create post object
  $my_post = array();
  $my_post['post_title'] = 'My post';
  $my_post['post_content'] = 'This is my post.';
  $my_post['post_status'] = 'publish';
  $my_post['post_author'] = 1;
  $my_post['post_category'] = array(8,39);
  
  // Insert the post into the database
  wp_insert_post( $my_post );