From PHP 5.5 to 5.6
----------------------------------------
http://php.net/manual/en/migration56.new-features.php
1. Constant expressions
It is also now possible to define a constant array using the const keyword:
2. Variadic functions via ...
3. Argument unpacking via ...
4. Exponentiation via **
5. use function and use const
6. phpdbg
7. Default character encoding
8. php://input is reusable
9. Large file uploads
10. GMP supports operator overloading
11. hash_equals() for timing attack safe string comparison
12. __debugInfo() magic method has been added
13. gost-crypto hash algorithm
14. SSL/TLS improvements
15. pgsql async support
----------------------------------------
http://php.net/manual/en/migration56.new-features.php
1. Constant expressions
It is also now possible to define a constant array using the const keyword:
2. Variadic functions via ...
3. Argument unpacking via ...
4. Exponentiation via **
5. use function and use const
6. phpdbg
7. Default character encoding
8. php://input is reusable
9. Large file uploads
10. GMP supports operator overloading
11. hash_equals() for timing attack safe string comparison
12. __debugInfo() magic method has been added
13. gost-crypto hash algorithm
14. SSL/TLS improvements
15. pgsql async support
