How to (and not to) use & create a PHP instance in the same line.

one-line_object_creation.php

<?php
// echo (new Foo())->$bar; // fails
// PHP Parse error:  syntax error, unexpected T_OBJECT_OPERATOR, expecting ',' or ';'
echo Foo::getI()->bar; //works

class Foo {
        public function __construct() {
                $this->bar="hello world\n";
        }
        static function getI() {
                return new static;
                /* Above won't work in PHP<5.3. But in extending classes
                 * "new self" would still return an instance of Foo.
                 */
                return new self;
        }
}