I don’t know why PHP officially instructed runkit to not be installed after downloading it from github. Later, I found another one on github:
https://github.com/php/pecl-php-runkit. It seems to be the latest one.
Note that it cannot be downloaded in releases. , otherwise it is not the latest
Need to download the latest git: (otherwise it will not work)
git clone https://github.com/php/pecl-php-runkit.git cd pecl-php-runkit phpzie ./configure make make install //即可