php扩展(centos+php7.2)---Composer: The requested PHP extension ext-intl * is missing from your system

1.CentOS 7

 yum install -y http://dl.iuscommunity.org/pub/ius/stable/CentOS/7/x86_64/ius-release-1.0-15.ius.centos7.noarch.rpm
 yum -y update

2.安装所有必须的扩展：

yum -y install  php72u-intl

如果出现yum-errors:
[Errno 14] HTTP Error 404: Not Found

点击 https://wiki.centos.org/yum-errors

3.查找intl.so的位置

find / -name intl.so

4.sudo cp /usr/lib64/php/modules/intl.so /etc/php/7.2.11/lib/php/extensions/no-debug-non-zts-20170718/ 

5.修改php.ini ,去掉注释

extension=intl

6.systemctl restart nginx/php-fpm

7.php -m查看扩展是否开启