My php.ini contains:

extension_dir = "C:Program Files (x86)EasyPHP-Devserver-17eds-binariesphpphp833vs16x86x240904030356ext"

php_curl.dll is in that directory.

The error.log contains:

PHP Warning:  PHP Startup: Unable to load dynamic library 'curl' (tried: C:\Program Files (x86)\EasyPHP-Devserver-17\eds-binaries\php\php833vs16x86x240904030356\ext\curl (The specified module could not be found), C:\Program Files (x86)\EasyPHP-Devserver-17\eds-binaries\php\php833vs16x86x240904030356\ext\php_curl.dll (The specified module could not be found)) in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library 'openssl' (tried: C:\Program Files (x86)\EasyPHP-Devserver-17\eds-binaries\php\php833vs16x86x240904030356\ext\openssl (The specified module could not be found), C:\Program Files (x86)\EasyPHP-Devserver-17\eds-binaries\php\php833vs16x86x240904030356\ext\php_openssl.dll (The specified module could not be found)) in Unknown on line 0

The actual error.log file’s text uses double backslash but I see that the text above shows single backslash.
I tried changing the extension_dir but when I restart the server, the php.ini line extension_dir is actually changed back to the same original value no matter what I change it to.