echo("returning true");
echo(is_object(fontmetrics()));
echo("--------");
echo("returning false");
echo(is_object(1));
echo(is_object(1/0));
echo(is_object(((1/0)/(1/0))));
echo(is_object("test"));
echo(is_object(true));
echo(is_object(false));
echo(is_object([]));
echo("--------");
echo("causing warnings:");
echo(is_object());
echo(is_object(1,2));
