Many2Many.php

<?php

namespace Vendor\Bundle\Entity;

use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Table(name="many_a")
 * @ORM\Entity
 */
class ManyA
{
    /**
     * @var ManyB[]
     * @ORM\ManyToMany(targetEntity="ManyB", mappedBy="maniesA")
     */
    protected $maniesB;

    public function __construct()
    {
        $this->maniesB = new ArrayCollection();
    }

    /**
     * @param ManyB $manyB
     * @param bool $stopPropagation
     * @return $this
     */
    public function addManyB(ManyB $manyB, $stopPropagation = false)
    {
        $this->maniesB->add($manyB);
        if(!$stopPropagation) {
            $manyB->addManyA($this, true);
        }
        return $this;
    }

    /**
     * @param ManyB $manyB
     * @param bool $stopPropagation
     * @return $this
     */
    public function removeManyB(ManyB $manyB, $stopPropagation = false)
    {
        $this->maniesB->removeElement($manyB);
        if(!$stopPropagation) {
            $manyB->removeManyA($this, true);
        }
        return $this;
    }

    /**
     * @param ManyB[] $maniesB
     * @return $this
     */
    public function setManiesB($maniesB)
    {
        foreach($this->maniesB as $manyB) {
            $this->removeManyB($manyB);
        }
        foreach($maniesB as $manyB) {
            $this->addManyB($manyB);
        }
        return $this;
    }

    /**
     * @return ManyB[]
     */
    public function getManiesB()
    {
        return $this->maniesB;
    }
}

/**
 * @ORM\Table(name="many_b")
 * @ORM\Entity
 */
class ManyB
{
    /**
     * @var ManyA[]
     * @ORM\ManyToMany(targetEntity="ManyA", inversedBy="maniesB")
     * @ORM\JoinTable(name="manies_a_to_manies_b")
     */
    protected $maniesA;

    public function __construct()
    {
        $this->maniesA = new ArrayCollection();
    }

    /**
     * @param ManyA $manyA
     * @param bool $stopPropagation
     * @return $this
     */
    public function addManyA(ManyA $manyA, $stopPropagation = false)
    {
        $this->maniesA->add($manyA);
        if(!$stopPropagation) {
            $manyA->addManyB($this, true);
        }
        return $this;
    }

    /**
     * @param ManyA $manyA
     * @param bool $stopPropagation
     * @return $this
     */
    public function removeManyA(ManyA $manyA, $stopPropagation = false)
    {
        $this->maniesA->removeElement($manyA);
        if(!$stopPropagation) {
            $manyA->removeManyB($this, true);
        }
        return $this;
    }

    /**
     * @param ManyA[] $maniesA
     * @return $this
     */
    public function setManiesA($maniesA)
    {
        foreach($this->maniesA as $manyA) {
            $this->removeManyA($manyA);
        }
        foreach($maniesA as $manyA) {
            $this->addManyA($manyA);
        }
        return $this;
    }

    /**
     * @return ManyA[]
     */
    public function getManiesA()
    {
        return $this->maniesA;
    }
}