Hello,
I found this script at zend. Please note the getenv("HTTP_REFFERER").
<?
/* Anti-leech bandwidth protecter by Corey Milner, http://www.odey.com.
Turn the refererring URL into a variable */
$from = getenv("HTTP_REFERER");
/* Check to see if the URL in the variable is a valid referrer. Add the
page URL which you would like people to arrive from here. */
if ($from != "http://www.yoursite.com/validpage.htm")
/* If the URL is valid, page loads now */
/* If URL is invalid the following error message and proper link appears,
enter your custom error message and a hyperlink to the valid URL you
entered above here*/
{print(" Sorry you have tried to link to a page which does not accept
visitors directly. <br>
<a href=http://www.yoursite.com/validpage.htm>CLICK HERE</a> to enter");
/* Prevent the rest of the page from loading */
exit;}
?>
I went to check getenv in the php manual, and it said "You can see a list
of all the environmental variables by using phpinfo(). You can find out
what many of them mean by taking a look at the CGI specification,
specifically the page on environmental variables.
I made a php script phpinfo(INFO_ALL) to return everything for my host and
did not see HTTP_REFFERER, not did I see any of the other args that were in
the comments on the getenv page.
I looked at the linked cgi pages and didn't find anything there either.
If by not seeing these HTTP_like variables in my phpinfo, does that mean
they are unavailable to me to use? Do they have to be setup during the
install of php/apache?
Where can I get more info on these getenv args/vars?
Thanks
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