PHP extension is missing


|| New version magento 2 PHP Extension intl is missing   
1. Go to the file php.ini 
2. Search for ;extension=php_intl.dll
3. Remove semicolon and restart server. It will work.


|| Magento 1.4v-1.9.1 version 
1. Go to the file php.ini 
2. Search for ;extension=php_curl.dll
3. Remove semicolon and restart server. It will work.