what do to activate curl_init

if localhost(xampp) not support
curl_init
what do to activate?
curl_init
what do to activate?
https://community.apachefriends.org/f/
https://community.apachefriends.org/f/viewtopic.php?f=16&t=68653
lse123 wrote:if localhost(xampp) not support
curl_init
what do to activate?
;extension=php_curl.dll