Seven years, PHP has been the top of the most popular programming language, driven by more than more than 200 million sites worldwide, more than 81.7% of the world's public web site in the server using PHP. PHP 7 biggest feature is greatly improved performance, in some WordPress benchmarks, the performance can reach PHP 5.6 times. PHP 7 contains a number of major security improvements, such as removing the PHP security mode, adding magic quotes, and some new reserved keywords, etc..
Improved log as follows:
Improved GENERATOR_CREATE opcode handler. (Bob, Dmitry)
Added hash_hkdf () function. (Andrey Andreev)