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@NogDogDec 09.2008 — #You can look at the $_SERVER['HTTP_REFERER'] value to see what, if any, URL the browser claims to have accessed your page from, but it is not a required HTTP header, may not be sent do to privacy settings or proxy settings, and can be easily spoofed. Therefore it can be used as a guide to what your processing does, but should never be depended upon for anything at all critical. @NogDogDec 09.2008 — #No, it would be something like:
page_one.php:
page_two.php:
But again, this is only useful as a general information sort of thing that does not have to be 100% correct. If you need something more dependable, then you are probably looking at something using sessions, such as:
page_one.php:
page_two.php:
Links in PHP
I don’t know if this is possible in PHP or not, but is there a way to detect if a link has been clicked? In my member area, I need there to be a way to change a security token’s value if the user visits a different page of the member area.
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@NogDogDec 09.2008 — #0
@NogDogDec 09.2008 — #No, it would be something like:page_one.php:
[code=php]
<a href="page_two.php">Go to page two</a>
[/code]page_two.php:
[code=php]
if(!empty($_SERVER['HTTP_REFERER']) and
stripos($_SERVER['HTTP_REFERER'], 'yourdomain.com/page_one.php') !== false)
{
echo "I'm pretty sure you got here from page one.";
}
[/code]But again, this is only useful as a general information sort of thing that does not have to be 100% correct. If you need something more dependable, then you are probably looking at something using sessions, such as:
page_one.php:
[code=php]
<?php
session_start();
$_SESSION['token'] = uniqid('',true);
?>
<a href="page_two.php?id=<?php echo $_SESSION['token']; ?>">Go to page 2</a>
[/code]page_two.php:
[code=php]
<?php
session_start();
if(isset($_GET['id']) and isset($_SESSION['token']) and
$_GET['id'] == $_SESSION['token'])
{
echo "I'm even more sure you got here from page one.";
}
[/code]