$instance
$instance : mixed
Public static variable to hold the single instance of the class.
Class MainWP_Child_WooCommerce_Status
MainWP WooCommerce Status Extension handler.
is_version_220() : boolean|integer
Compare woocommerce versions.
By default, version_compare returns -1 if the first version is lower than the second, 0 if they are equal, and 1 if the second is lower. When using the optional operator argument, the function will return true if the relationship is the one specified by the operator, false otherwise.
Comparison response.