where($Ea,$m);}function
where_link($q,$d,$W,$Vc="="){return"&where%5B$q%5D%5Bcol%5D=".urlencode($d)."&where%5B$q%5D%5Bop%5D=".urlencode(($W!==null?$Vc:"IS NULL"))."&where%5B$q%5D%5Bval%5D=".urlencode($W);}function