location checking using DB::row in laravel using mysql st_contains

i have some code where i need to check if the locatin is supported okay, i am drawing a polygonthat contains some location then i send latitude and longitude and check if this latitude and longitude is contained within the same polygon.

i will be using st_contains method to check if this contains this, but i am unable to get this working, my knowledge in sql queries is not super strong so i would appreciate any help in this one.

public function getlocation()
{
         $request_location = $req->loc . ' , ' .  $req->lat;
    $query = DB::raw("select * st_contains ( '$location->polygon', '$request_location') AS result") );
        if ($query){
          'success';
               } 

}

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