Default value in Doctrine

Here is how to do it in PHP 8 using attributes.

#[ORM\Column(type: 'boolean', nullable: false, options: ['default' => 0])]
#[Assert\NotNull()]
private bool $isFavorite = false;

Be careful when setting default values on property definition! Do it in constructor instead, to keep it problem-free. If you define it on property definition, then persist the object to the database, then make a partial load, then not loaded properties will again have the default value. That is dangerous if you want to persist the object again.