I have WAMPSERVER 3.0.6 64 bit. I have updated PHP version 5.6.25 from 7.0.10. I have installed updated version of Moodle 3.4 and have tried to run but getting the issue is following - Intl extension is required to improve internationalization support, such as locale aware sorting and international domain names.

For resolving this issue I have tried so many tips but could not resolve this issue.