Forbidding of creating objects outside factory in PHP with debug_backtrace

php_factory_debug_backtrace.php

<?php

trait FactoryChecking
{
    protected function checkFactory(string $factoryClass): void
    {
        $trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
        foreach($trace as $traceItem) {
            if ($traceItem['class'] == $factoryClass) {
                return;
            }
        }	
        throw new Exception('Cannot create class ' . static::class . ' outside of factory');
    }
}

class ClassA
{
    use FactoryChecking;

    public function __construct()
    {
        $this->checkFactory(Factory::class);
    }
}

class Factory
{
    public function create(): ClassA
    {
        return new ClassA();
    }
}