Add check so `$values` is a array before using it as a array
Add check so `$values` is a array before using it as a array

nlemoine/papi,isotopsweden/wp-papi,wp-papi/papi,nlemoine/papi,wp-papi/papi,isotopsweden/wp-papi,nlemoine/papi,isotopsweden/wp-papi,wp-papi/papi