empty_loop         0.076
unpack_i16         2.097    2.021
ord_i16            0.925    0.849
unpack_u16         2.051    1.975
ord_u16            0.740    0.664
------------------------
Total              5.889

php -v
PHP 7.0.5 (cli) (built: Apr 23 2016 10:48:01) ( NTS )
Copyright (c) 1997-2016 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2016 Zend Technologies
    with Zend OPcache v7.0.6-dev, Copyright (c) 1999-2016, by Zend Technologies