Try Using PHP5
I Had the Same problems on php7
I dont know if php7 is the problem.
You might also want to check the file and folder permissions is xampp running as an administrator (bad idea by the way if you intend on accessing the development site remotely)
This is the Version of PHP im Currently Running Along With the Modules that i am running
PHP 5.4.16 (cli) (built: Jun 23 2015 21:17:27)
Copyright © 1997-2013 The PHP Group
Zend Engine v2.4.0, Copyright © 1998-2013 Zend Technologies
[root@server1 ~]# php -m
[PHP Modules]
bz2
calendar
Core
ctype
curl
date
dom
ereg
exif
fileinfo
filter
ftp
gd
gettext
gmp
hash
iconv
json
libxml
mhash
openssl
pcntl
pcre
Phar
readline
Reflection
session
shmop
SimpleXML
soap
sockets
SPL
standard
tokenizer
wddx
xml
xmlreader
xmlwriter
xsl
zip
zlib
[Zend Modules]