php problem with fopen("https://..")

I am using XAMPP's latest version.

<?php
fopen( "https://www.google.com/accounts/ClientLogin","rb");
?>

Warning: fopen(https://www.google.com/accounts/ClientLogin) [function.fopen]: failed to open stream: Invalid argument in nn.php on line 2

It works for urls beginning with http://.

In my php.ini, I uncommented the following line : 
extension=php_openssl.dll

Ans : 

Ok,
I was editing the wrong php.ini.
I should have edited it in : 
xampp\apache\bin
rather than
xampp\php\

in phpinfo(), it is shown which php.ini is being loaded.