category__and
needs to be an array of category ID’s
category__and (array) – use category id.
You can modify your code to look like this
$query = new WP_Query( array('category__and' => array(12,32)));
category__and
needs to be an array of category ID’s
category__and (array) – use category id.
You can modify your code to look like this
$query = new WP_Query( array('category__and' => array(12,32)));