如何在CentOS6.9 Nginx服务器上安装/启用“intl”扩展php7.0.19

Question

I need your advise for installing php "intl" extension using SSH commands step by step.

My server is CentOS 6.9, Nginx, php 7.0.19, php-fpm

I located php.ini # locate php.ini its /usr/local/lib/php.ini and I found this in php.ini

;extension=php_intl.dll

and

[intl]
;intl.default_locale =
; This directive allows you to produce PHP errors when some error
; happens within intl functions. The value is the level of the error produced.
; Default is 0, which does not produce any errors.
;intl.error_level = E_WARNING
;intl.use_exceptions = 0

I tried removing ; from ;extension=php_intl.dll and restarted ngninx but that does not work.