Ticket #34010: 34010.with-operator.diff

wp-includes/post.php

@@ -1552 +1552 @@
 }
 
 /**
+ * Get a list of post type names that support a specific feature.
+ *
+ * @since 4.5.0
+ *
+ * @global array $_wp_post_type_features
+ *
+ * @param array|string $args     Single feature or an array of features the post types should support.
+ * @param string       $operator Optional. The logical operation to perform. 'or' means only one
+ *                               element from the array needs to match; 'and' means all elements
+ *                               must match. Accepts 'or' or 'and'. Default 'and'.
+ * @return array A list of post type names.
+ */
+function get_post_types_by_support( $args, $operator = 'and' ) {
+                global $_wp_post_type_features;
+
+                $features = array_fill_keys( (array) $args, true );
+
+                return array_keys( wp_filter_object_list( $_wp_post_type_features, $features, $operator ) );
+}
+
+/**
  * Update the post type for the post ID.
  *
  * The page or post cache will be cleaned for the post ID.