Get last stable version of the driver php_mongodb.dll 64bit thread safe, copy it in the "ext" folder of PHP, enable it in the php.ini "extension=php_mongodb.dll", restart apache service and get message "Unable to load dynamic library 'D:/php-7.1.26-Win32-VC14-x64/ext/php_mongodb.dll' - Le module sp\xef\xbf\xbdcifi\xef\xbf\xbd est introuvable.\r\n in Unknown on line 0" in the apache's error.log . Try versions 1.6.0apha1 and 1.5.2, same problem.

Regards