how to pass php variable in mysql laravel database
$data = DB::select(DB::raw("SELECT pur_price FROM productpricing WHERE
mst_uid = (SELECT
mst_uid
FROM
master_material
WHERE prd_id = :product_id
AND mtl_id = :material
AND color_id = :color
AND mtl_status ='1')
AND ($size between pur_sqft1 AND ifnull(pur_sqft2,$size))"),
array('product_id' =>$product_id,
'material' =>$material,
'color' =>$color,
));