$a = [10, 15, 'a', 'b', 'c', null];
$b = \array_filter($a, function($value) { return \is_int($value); });
\var_dump($a, $b);type FilterPost struct {
StationIds interface{} `json:"station_ids"`
Params struct {
L interface{} `json:"l"`
X interface{} `json:"x"`
Z interface{} `json:"z"`
} `json:"params"`
}