HHVM 4.8.0 LTS release, Facebook PHP to create a virtual machine

HHVM 4.8.0 has been released, this is a long-term support version:

• This version will get about 48 weeks of support 
• The next LTS version expected to be released in 24 weeks
• HHVM 3.30 and HHVM 4.3-4.7 still supported
• No longer supported HHVM 3.27

Noteworthy update:

• Now XHP property is marked with a  @lateinitlabel, to display the status of dependent property
• .hhconfigOptions disable_unsafe_exprand disable_unsafe_blockare now supported, and the removal of // UNSAFEand /* UNSAFE_EXPR */support. The official recommended hhast-migrate --add-fixmesthen use sedparameters or the like to remove UNSAFEand UNSAFE_EXPRcomments. In future releases, this behavior will no longer be optional
• HSL v4.7.0  adds a Ref<T>class , the value for the package objects

In addition to the above update, also introduced a number of disruptive change, complete, please see the announcement .

HHVM by Facebook to create a PHP virtual machine, but it will greatly increase the speed of PHP code by dynamically translated into native machine code. HHVM support PHP and PHP Hack language dialects, but the 4.0 version, only supports Hack language.