test secure connection

is there a way with php to check if the page is being viewed on a secure connection?

e.g. https vs http

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One way:

if (isset($_SERVER['HTTPS']) && ($_SERVER['HTTPS'] == 'on'))

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qwertqAuthor Commented:

and i assume i can use (below) accordingly.
(!isset($_SERVER['HTTPS']) && ($_SERVER['HTTPS'] != 'on'))

where do you get $_SERVER['HTTPS'] from? i do not see it reflected in the manual http://us2.php.net/reserved.variables
It a webserver variable. I believe it's a mod_ssl thing.
So your best bet is to create a phpinfo() page and view it using https, to make sure you have it.
Oh, and if you're doing your test that way, don't require both conditions; so

(!isset($_SERVER['HTTPS']) || ($_SERVER['HTTPS'] != 'on'))
Funny enough, it is documented on the link you posted; in the contributed comments anyway. :)
Scroll down about three-quarters down the page or do a search for "https".
There's also another solution posted-->$_SERVER['SERVER_PORT']==443
But really just check your phpinfo().
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