Question

Check for HTTPS Connection

Asked by: jlockyer

Hi ...
   I am trying to perform the following function.

When a user comes to the site, I want to check to ensure they are using the HTTPS socket. If they are not, they are redirected to the same page path just with the HTTPS header. I know how to change the header, but am unsure how to check for an HTTPS connection. Look forward to a response...

I thought it might have been working, but it redirected back to HTTPS://localhosts but localhost is not my server name.

Scenario
-------
page name = page.php
Someone types http://www.example.com/page.php
Browser redirects to https://www.example.com/page.php

Also, does this eliminate the page from being driven through the HTTP protocol or are there ways around it (which I don't want to be extorted).

Jeff.

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Asked On
2006-01-03 at 14:09:13ID21682757
Tags

https

,

check

Topic

PHP Scripting Language

Participating Experts
1
Points
250
Comments
8

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Answers

 

by: D4LyPosted on 2006-01-03 at 14:23:45ID: 15603326

Hi jlockyer-
Try this:

if(!$_SERVER['HTTPS'] == 'on'){
    $url = 'https';
    $url .= '://'.$_SERVER['SERVER_HOST'].$_SERVER['SCRIPT_NAME'];
if($_SERVER['QUERY_STRING']>' ')
    $url .= '?'.$_SERVER['QUERY_STRING'];
header("Location: ".$url."");
exit();
}

- D4

 

by: jlockyerPosted on 2006-01-03 at 15:01:57ID: 15603657

D4Ly,
  Thanks for the quick response, but that didn't seem to do the trick, here is the server response.

PHP Parse error: parese error, unexpected T_STRING in /path of file on line 3.

<?Php
if(!$_SERVER['HTTPS'] == 'on') {
    $url = 'https';
    $url .= '://'.$_SERVER['SERVER_HOST'].$_SERVER['SCRIPT_NAME'];
if($_SERVER['QUERY_STRING']>' ') {
    $url .= '?'.$_SERVER['QUERY_STRING'];
header("Location: ".$url.""); }
exit();
}
?>

Above is my complete file... Any ideas ? I thought maybe the if clause not having a { might affect ?
If I change the request

Jeff.

 

by: D4LyPosted on 2006-01-03 at 15:12:52ID: 15603726

sorry about that. this works.

<?php
if(!$_SERVER['HTTPS'] == 'on') {
    $url = 'https';
    $url .= '://'.$_SERVER['HTTP_HOST'].$_SERVER['SCRIPT_NAME'];
if($_SERVER['QUERY_STRING']!=="")
    $url .= '?'.$_SERVER['QUERY_STRING'];
header("Location: ".$url."");
exit();
}
?>

- D4

 

by: jlockyerPosted on 2006-01-03 at 15:58:02ID: 15604026

D4Ly
   That didn't work either, giving me the same response from the server.

The page is existing at
http://www.alpineclubofcanada.ca/centennialrenewal/page4test.php  and just for consistentcy sake, here is the code again.

Is there a way to test for the variable 'HTTPS' being 'off' I have seen this in other cases, not sure if that varies depending on your build of PHP ? See if that response works for you, I assume all I should get for a response when calling the above url is that http will be parsed to https and rest will follow.

J.

<?php
if(!$_SERVER['HTTPS'] == 'on') {
    $url = 'https';
    $url .= '://'.$_SERVER['HTTP_HOST'].$_SERVER['SCRIPT_NAME'];
if($_SERVER['QUERY_STRING']!=="")
    $url .= '?'.$_SERVER['QUERY_STRING'];
header("Location: ".$url."");
exit();
}
?>

 

by: D4LyPosted on 2006-01-03 at 16:02:38ID: 15604056

>>giving me the same response from the server

what response is that? I see a blank page.

The parse error should not exist anymore, which you asked about before.

try this:

<?php
if(!$_SERVER['HTTPS'] == 'on') {
    $url = 'https';
    $url .= '://'.$_SERVER['HTTP_HOST'].$_SERVER['SCRIPT_NAME'];
if($_SERVER['QUERY_STRING']!=="")
    $url .= '?'.$_SERVER['QUERY_STRING'];
echo $url;
}
?>

this will print the url that it will redirect to.

 

by: D4LyPosted on 2006-01-03 at 16:05:23ID: 15604073

and yes, if you are running PHP 4.1 or earlier you need to use

$HTTP_SERVER_VARS

instead of

$_SERVER

hope this helps.

- D4

20120131-EE-VQP-002

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