I am using Windows10 64 bit Apache 2.4.25 (Win64) PHP 7.1.0-Win32-VC14-x64
when i try calling curl_init() function, i get an error saying \"Call to undefined functio
I had the same issue with Acquia's Dev Desktop, copying the libcrypto-1_1-x64.dll and libssl-1_1-x64.dll from the PHP7.3 folder to the Apache/bin folder resolved the issue for me.
"Beginning with version 1.1.0 OpenSSL did change their libary names! libeay32.dll is now libcrypto-.dll (e.g. libcrypto-1_1-x64.dll for OpenSSL 1.1.x on 64bit windows) ssleay32.dll is now libssl-.dll (e.g. libssl-1_1-x64.dll for OpenSSL 1.1.x on 64bit windows)"
See https://www.php.net/manual/en/curl.installation.php#121921.