The next version of PHP will be improved on almost all aspects over what we expected, PHP surpass many other languages in terms of speed. In addition, the next version will not be PHP 5.7 or PHP 6 but jumps directly to version 7. Tests are already been carried out on the most popular frameworks of the moment and there is many improvements in terms of speed and memory consumption.
The reduced consumption of memory is a very good news for web hosters that can host many more sites on a single server.
The criticism that PHP is too heavy, too slow, it’s over soon.
Source : developpez.com