Ok, got it…. finally…
$rootkeys[] = $_GET;
foreach($rootkeys as $rootkey) {
foreach($rootkey as $key => $value) {
$partialkey = explode("$",$key);
$keya = $partialkey[0];
$keyb = 'meta_key = \''.$keya.'$';
$keyc = 'meta_key LIKE \''.$keya.'%';
$where = str_replace($keyb, $keyc, $where);
}
}
return $where;