PHP Warning: Module "gmp" is already loaded in Unknown on line 0

PHP扩展gmp被加载两次，报错如下：

PHP Warning: Module "gmp" is already loaded in Unknown on line 0

解决办法：

Not all PHP modules are loaded as separate modules and are part of the
PHP base binary. In this case the module is loaded without a separate
load statement/configuration. If in addition a separate configuration
file exists, e.g. /etc/php7/fpm/conf.d/gmp.ini, the web server tries
to load the module twice which can cause these kind of messages.

//打开.ini配置文件，将下面这行注销即可；
extension=gmp.so

原因：

是因为.ini文件底部又加载了一次，如下：

extension =  /www/server/php/80/lib/php/extensions/no-debug-non-zts-20200930/gmp.so