我有 Ubuntu 18 发行版，但我需要为 PECL 扩展安装 php7.2-dev。
mvolchkov@ias-su:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04 LTS
Release: 18.04
Codename: bionic
我尝试安装 php7.2-dev：
mvolchkov@ias-su:~$ sudo apt-get install php7.2-dev
Unresolved packages:
php7.2-dev : Depend on: libpcre3-dev (>= 2:8.35) but will not be installed
Depend on: libssl-dev but will not be installed
But it depends on: libpcre3-dev
比我尝试安装 libpcre3-dev，但得到以下错误：
mvolchkov@ias-su:~$ sudo apt-get install libpcre3-dev
libpcre3-dev : Depend on: libpcre3 (= 2:8.39-9) ?? 2:8.41-4+ubuntu17.10.1+deb.sury.org+1 will be installed
E: …