I add extension=php_apc.dll line in wamp bin apache Apache2.2.17 bin php.ini file under Dynamic Extensions. Find The suitable APC for the Xampp from the blow given link based on PHP Extension Build, and Xampp version. 2 PHP extensions are missing for installation of Magento 2.
HOW TO INSTALL APC PHP ACCELERATOR WAMP HOW TO
Quick tutorial over how to enable PHP extensions. Now just append following two lines at the very bottom of this initialization file as following figure.