Create New page if its not exists in WordPress programmatically

For our customization want to create new page if it’s not exists then place the following snippet in functions.php within your theme folder!.

function create_new_page()
{
    global $user_ID;
    if( get_page_by_title('New Page')==NULL )
    {
	$new_post = array(
		      'post_title' => 'New Page',
		      'post_content' => 'New post content',
		      'post_status' => 'publish',
		      'post_date' => date('Y-m-d H:i:s'),
		      'post_author' => $user_ID,
		      'post_type' => 'page'
		);
	$post_id = wp_insert_post($new_post);
   }
}
add_action('init','create_new_page');

Have any doubt, then comment here!