What's the fastest way to compare two objects in PHP?

Question

Let\'s say I have an object - a User object in this case - and I\'d like to be able to track changes to with a separate class. The User object should not have to change it\'s be

Answer 1

Simple example comparing dto class through reflection

class InvoiceDetails
{
    /** @var string */
    public $type;

    /** @var string */
    public $contractor;

    /** @var string */
    public $invoiceNumber;

    /** @var \DateTimeInterface|null */
    public $saleDate;

    /** @var \DateTimeInterface|null */
    public $issueDate;

    /** @var \DateTimeInterface|null */
    public $dueDate;

    /** @var string */
    public $payment;

    /** @var string */
    public $status;


    public function isEqual(InvoiceDetails $details): bool
    {
        $reflection = new \ReflectionClass(self::class);

        /** @var \ReflectionProperty $property */
        foreach ($reflection->getProperties() as $property) {
            $name = $property->getName();
            if ($this->$name !== $details->$name) {
                return false;
            }
        }

        return true;
    }

}