I have installed Xampp on windows 7. When I try to run code I get the error
Warning: Module \'openssl\' already loaded in line 0
You seem to have the line
extension=php_openssl.dll
twice in your php.ini file and/or subfiles.
You need to find all relevant php.ini files in your xampp directory and remove or comment out one of the module directives like this:
;extension=php_openssl.dll
After a server restart, this should solve it.