Easy if/else question - I think?

[Edible_Planet]

If (this page was redirected from this URL)

then (go to this URL by clicking the link)

else (go to this URL by clicking the link)

What would I put in the parentheses?

[Installer]

if (isset($_SERVER['HTTP_REFERER']) && ($_SERVER['HTTP_REFERER'] == 'http://example.com/index.php')) {
    echo '<a href="one_page.php">click</a>';
} else {
    echo '<a href="another_page.php">click</a>';
}

[NogDog]

Not sure if this is what you mean (and note that HTTP_REFERER is not a required header and can be spoofed):

<?php
if($_SERVER['HTTP_REFERER'] == 'http://www.example.com/fubar.html')
{
   $link = "http://www.example.net/page1.php";
}
else
{
   $link = "http://www.example.org/page_x.php";
}
echo "<a href='$link'>click this link</a>";
?>

[Installer]

I see now you were asking about a redirect rather than referrer. I think the best way to do that is to add a query string to the end of the redirect url (if you're able to): e.g.

header('Location: http://example.com?a=b');

Then

if (isset($_GET['a']) && ($_GET['a'] == 'b')) { 
    echo '<a href="one_page.php">click</a>'; 
} else { 
    echo '<a href="another_page.php">click</a>'; 
}

[Edible_Planet]

Thanks for your help. I'm on the right track. Here's what I have so far.

<?php if($SERVER['HTTP_REFERER'] == 'http://www.soultutor.com/altja.html')
{
$link = <form action="https://www.paypal.com/cgi-bin/webscr" method="post">
<input type="hidden" name="cmd" value="s-xclick">
<input type="hidden" name="hosted_button_id" value="2709852">
<input type="image" src="http://www.soultutor.com/images/buynow.png" border="0" name="submit" alt="">
<img alt="" border="0" src="https://www.paypal.com/en_US/i/scr/pixel.gif" width="1" height="1">
</form>
;
}
else
{
$link = "http://www.soultutor.com/test2.html";
}
echo "<a href='$link'>input type="image" src="http://www.soultutor.com/images/buynow.png" border="0" name="submit" alt=""</a>";
?>

The code works great when I only have a URL in the first $link (just like the example you gave me) but won't work when I put in the form instead of the link. Basically I need the button to allow the purchase of the item only if the user was referred from a certain page otherwise the button will take them to an error page.

Any more ideas?

[NogDog]

Edible Planet;10900327 wrote:

...
Any more ideas?

Fixing all the parse errors would help. :p

<?php
if($_SERVER['HTTP_REFERER'] == 'http://www.soultutor.com/altja.html')
{
   echo "<form action='https://www.paypal.com/cgi-bin/webscr' method='post'>
<input type='hidden' name='cmd' value='_s-xclick'>
<input type='hidden' name='hosted_button_id' value='2709852'>
<input type='image' src='http://www.soultutor.com/images/buynow.png' border='0' name='submit' alt=''>
<img alt='' border='0' src='https://www.paypal.com/en_US/i/scr/pixel.gif' width='1' height='1'>
</form>
";
}
else
{
   echo "<a href='http://www.soultutor.com/test2.html'><img type='image' 
src='http://www.soultutor.com/images/buynow.png' border='0' name='submit' alt=''></a>";
}
?>

[NogDog]

PS: Or if you prefer:

<?php
if($_SERVER['HTTP_REFERER'] == 'http://www.soultutor.com/altja.html')
{ 
?>
<form action='https://www.paypal.com/cgi-bin/webscr' method='post'>
<input type='hidden' name='cmd' value='_s-xclick'>
<input type='hidden' name='hosted_button_id' value='2709852'>
<input type='image' src='http://www.soultutor.com/images/buynow.png' border='0' name='submit' alt=''>
<img alt='' border='0' src='https://www.paypal.com/en_US/i/scr/pixel.gif' width='1' height='1'>
</form>
<?php
}
else
{
?>
<a href='http://www.soultutor.com/test2.html'><img type='image' 
src='http://www.soultutor.com/images/buynow.png' border='0' name='submit' alt=''></a>";
<?php
}
?>

[Edible_Planet]

Thanks a bunch. You can tell I'm a newb as I had to go look up what parse errors are :-)