ns_querygetall - Get multiple query values from the HTTP request
This command returns all values whose key is key. If there are none, the default result def_result is returned, or an empty string is returned if def_result is not specified. This function is useful for checkboxes.
NOTES Note that despite its name, ns_querygetall works on POST form data as well as query string data.
ns_getform, ns_query, ns_queryexists