output.txt

string(7) "Example"
object(Example)#1 (0) {
}


Fatal error:  Call to private Example::__construct() from invalid context in <file> on line 18

traitleton.php

<?php 

trait Singleton
{
    private function __construct() {
        var_dump(get_called_class());
    }
    public static function getInstance() {
        return new static;
    }
}

class Example {
    use Singleton;
}

var_dump(Example::getInstance());
var_dump(new Example);