使用PDO传递％like％param的正确方法？

Here's the query below,

这是以下查询,

public function getSearchResult($searchString){
       $stmt = $this->conn->prepare("SELECT t.* FROM company t WHERE t.company_name like ? ");
        $stmt->bind_param("i", "%".$searchString."%");
        $stmt->execute();
        $tasks = $stmt->get_result();
        $stmt->close();
        return $tasks;
    }
public func