gistfile1.php

final class DatabaseName implements Name {
  private $db;
  private $table;
  
  public function __construct(Database $db, string $table) {
    $this->db = $db;
    $this->table = $table;
  }
  
  public function rename($name) {
    $this->db->sql("UPDATE $this->table SET name = $name ...");
  }
  
  public function toString() {
    return $this->db->sql("SELECT name FROM $this->table ...");
  }
}

final class ConstantName implements Name {
  private $origin;
  private $name;
  
  public function __construct(Name $origin, string $name) {
    $this->origin = $origin;
    $this->name = $name;
  }
  
  public function rename($name) {
    $this->origin->rename($name);
  }
  
  public function toString() {
    return $this->name;
  }
}