how to add a foreign key (one to many) in symfony - symfony

Question

i have two entities 'Panier' and 'Reservation' i want to add a one to many foreign key (the Entity 'Panier' can have many 'Reservation' and 'Reservation' has only one 'Panier' id ) , so i have to add a foreign key 'id' of 'Panier' in my Reservation entity class .
this is my Reservation class :
class Reservation
{
/**
* #var integer
*
* #ORM\Column(name="id", type="integer", nullable=false)
* #ORM\Id
* #ORM\GeneratedValue(strategy="IDENTITY")
*/
private $id;
/**
* #var \DateTime
*
* #ORM\Column(name="dateReservation", type="datetime", nullable=false)
*/
private $datereservation = 'CURRENT_TIMESTAMP';
/**
* #var integer
*
* #ORM\Column(name="quantite", type="integer", nullable=false)
*/
private $quantite;
/**
* #var float
*
* #ORM\Column(name="total", type="float", precision=10, scale=0, nullable=true)
*/
private $total;
/**
* #var string
*
* #ORM\Column(name="type", type="string", length=255, nullable=false)
*/
private $type;
/**
* #var string
*
* #ORM\Column(name="seat", type="string", length=255, nullable=false)
*/
private $seat;
/**
* #var integer
*
* #ORM\Column(name="payer", type="integer", nullable=true)
*/
private $payer;
/**
* #var string
*
* #ORM\Column(name="nomReservation", type="string", length=255, nullable=true)
*/
private $nomreservation;
/**
* #var \Event
*
* #ORM\ManyToOne(targetEntity="Event")
* #ORM\JoinColumns({
* #ORM\JoinColumn(name="event_id", referencedColumnName="id")
* })
*/
private $event;
/**
* #var \User
*
* #ORM\ManyToOne(targetEntity="User")
* #ORM\JoinColumns({
* #ORM\JoinColumn(name="user_id", referencedColumnName="id")
* })
*/
private $user;

Answer 1

<?php
/** #Entity */
class Reservation {
/**
* #ManyToOne(targetEntity="Panier", inversedBy="reservations")
* #JoinColumn(name="panier_id", referencedColumnName="id")
*/
private $panier;
}
/** #Entity */
class Panier {
/**
* One Panier has many Reservations. This is the inverse side.
* #OneToMany(targetEntity="Reservation", mappedBy="panier")
*/
private $reservations;
public function __construct() {
$this->features = new ArrayCollection();
}
}