file:User.php
<?php
namespace models;

/**
 * @Entity
 * @InheritanceType("JOINED")
 * @DiscriminatorColumn(name="discr", type="string")
 * @DiscriminatorMap({"admin" = "Admin", "consumer" = "Consumer"})
 */

abstract class User
{
    /**
     * @Id
     * @Column(type="integer")
     *
     */
    protected $id;

    /**
     * Column(type="string")
     */
    protected $name;

    /**
     * Column(type="string")
     */
    protected $address;

    /**
     * OneToMany(targetEntity="Email")
     */
    private $emails;


}
 ?>


file:Admin.php
<?php
namespace models;
use models\User;
/**
 * @Entity
 */


class Admin extends User
{

    /**
     * @Column(type="string")
     */
    private $admin_variable1;

    /**
     * @Column(type="string")
     */
    private $admin_variable2;


}
?>


file:Consumer.php

<?php
namespace models;
use models\User;

/**
 * @Entity
 */
class Consumer extends User
{
    /**
     * @Column(type="string")
     */
    private $consumer_var1;

    /**
     * @Column(type="string")
     */
    private $consumer_var2;

}

file:Email.php

<?php
namespace models;
/**
 * @Entity
 */
class Email
{
    /**
     * @Id
     * @Column(type="integer")
     *
     */
    private $id;

    /**
     * @Column(type="string")
     */
    private $email;

}