Which two type names are printed?
php
<?php
$reference = 42;
echo get_debug_type($reference), PHP_EOL;
$reference = '42';
echo get_debug_type($reference), PHP_EOL;
<?php
$reference = 42;
echo get_debug_type($reference), PHP_EOL;
$reference = '42';
echo get_debug_type($reference), PHP_EOL;