[dee_ell]

'post_type' => 'any',

This gets all posts except revisions. https://developer.wordpress.org/reference/classes/wp_query/#post-type-parameters

So your query would be:

query_posts(array(
    'post_type' => 'any',
    'meta_key' => 'post_views_count',
    'orderby' => 'meta_value_num',
    'order' => 'DESC',
        'post_type' => array('posttype1', 'postype2', 'posttype3')
    )
);

[dee_ell]

Sarakinos answer only worked with two small but important modifications.

1. The $attribute->set_id() needs to be set to 0.
2. The $attribute->set_name(); and $variation->set_attributes() do not need the pa_ prefix. The methods already handle the prefixes.

So a working code would be:

//Create main product
$product = new WC_Product_Variable();

//Create the attribute object
$attribute = new WC_Product_Attribute();

//pa_size tax id
$attribute->set_id( 0 ); // -> SET to 0

//pa_size slug
$attribute->set_name( 'size' ); // -> removed 'pa_' prefix

//Set terms slugs
$attribute->set_options( array(
    'blue',
    'grey'
) );

$attribute->set_position( 0 );

//If enabled
$attribute->set_visible( 1 );

//If we are going to use attribute in order to generate variations
$attribute->set_variation( 1 );

$product->set_attributes(array($attribute));

//Save main product to get its id
$id = $product->save();

$variation = new WC_Product_Variation();
$variation->set_regular_price(10);
$variation->set_parent_id($id);

//Set attributes requires a key/value containing
// tax and term slug
$variation->set_attributes(array(
    'size' => 'blue' // -> removed 'pa_' prefix
));

//Save variation, returns variation id
echo get_permalink ( $variation->save() );


// echo get_permalink( $id ); // -> returns a link to check the newly created product

Keep in mind, the product will be bare bones, and will be named ‘product’. You need to set those values in the $product before you save it with $id = $product->save();.

[Author]

Posts