facebook 要终止支持php了，建议使用hhvm的应用迁移到php7。下面附上终止支持计划。Ending Support for PHPHHVM v3.30 will be the last release series where HHVM aims to support PHP. The key dates are:2018-12-03: branch cut: expect PHP code to stop working with master and nightly builds after this date2018-12-17: expected release date for v3.30.02019-01-28: expected release date for v4.0.0, without PHP support2019 查看全文