<?php

class Foo
{
    const use = 'yay';
    public static function new()
    {
        echo __METHOD__, PHP_EOL;
        return new static();
    }
    public function self()
    {
        echo __METHOD__, PHP_EOL;
        return $this;
    }
}
Foo::new()::new()::new();
var_dump((new Foo())->self()::new()->self()->self()::use);
Foo::{'new'}();
var_dump(Foo::use);
echo "\nDone\n";