Does installing that way work? Usually I had to move the php.ini in the C:\windows directory. Plus, you can point to the dll files in the httpd.conf file in Apache. Might be confusing to copy all files to the Apache directory, sometimes you may want to add extensions to PHP so keeping it separate is helpful.
also, running command line is confusing for most people, just check if php is installed correctly by opening 127.0.0/phpinfo.php in your browser. This will also be helpful to show that Apache is setup correctly. It will list the php info if done right. But first you need to make that phpinfo.php file
save it as phpinfo.php to the htdocs directory