is_resource Finds whether a variable is a resource &reftitle.description; boolis_resource mixedvar Finds whether the given variable is a resource. &reftitle.parameters; var The variable being evaluated. &reftitle.returnvalues; Returns &true; if var is a resource, &false; otherwise. &reftitle.examples; ]]> &reftitle.notes; is_resource is not a strict type-checking method: it will return &false; if var is a resource variable that has been closed. &reftitle.seealso; The resource-type documentation get_resource_type