查看php.ini位置
[root@VM-4-2-centos htdocs]# php --ini
Configuration File (php.ini) Path: /usr/local/lighthouse/softwares/php/etc
Loaded Configuration File: /usr/local/lighthouse/softwares/php/etc/php.ini
Scan for additional .ini files in: /usr/local/lighthouse/softwares/php/etc/php.d
Additional .ini files parsed: (none)
查看开启了哪些扩展
php -m