. 7 1.CentOS yum the install -Y http://dl.iuscommunity.org/pub/ius/stable/CentOS/7/x86_64/ius-release-1.0-15.ius.centos7.noarch.rpm yum Update -Y 2 install all necessary extensions: yum -y install php72u-Intl if yum-errors appear: [Errno 14] HTTP Error 404: Not Found click https://wiki.centos.org/yum-errors 3. Find intl.so position 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. modify php.ini, uncomment extension = Intl 6.systemctl the restart Nginx / PHP-FPM 7.php see extension is turned -m