PHP 5.5 Features

From PHP 5.4 to 5.5
----------------------------------------
http://php.net/manual/en/migration55.new-features.php

http://www.techrepublic.com/blog/software-engineer/10-improvements-in-php-550-for-web-developers/
1. Generators added
2. finally keyword added
3. New password hashing API
4. foreach now supports list()
5. empty() supports arbitrary expressions
6. array and string literal dereferencing
7. Class name resolution via ::class
8. OPcache extension added
9. Apache 2.4 handler supported on Windows
10. Improvements to GD