Verifying if a source has a script

Is this possible?

If a script is on a page, then it will show

echo "Hello World";

on another website.



If a script isn't on the page, then it will change another website into
this:

echo "You need the script";




I got some of this already:
if ($_GET['affcode'] && is_numeric($_GET['affcode']) {
echo 'Welcome Affiliate!!';
} else {
echo 'Welcome Guest';
}

but what should i do to replace affcode? A website link? because the php code is on an external site.

I've got no idea what you're talking about.

Another website? What website? A script? What sort of script?

ok..

If a website has a script, then it will make another section of a different website to show.

If a website DIDNT have the script, then nothing wouldshow on the different website.

Do you mean like some kind of Affiliate link?

Looking at your code closer you just need to do this. Use the code you have. And all links should have ?affcode=2 added to the end. Like So

Code:

---

<a href="http://somepage.com/blah.php?affcode=2">Some page</a>

---

yeah basically.

is it possible for a php script to "verify" if an affilate link is there?
without someone clicking the link?

Ok, you've got #1. That is your page. and #2 that is your affiliates page. You want #1 to check if #2 has an affiliate link. If so when a visitor comes from #2 to #1 via a link it should say Welcome Affiliate. Is that what you want?

Quote:

---

If a website has a script, then it will make another section of a different website to show.

---

Code:

---

if(stripos(file_get_contents('http://www.othersite.com/page.html'), '<script') !== false)
  echo('You\'re an affiliate.');
else
  echo('You\'re a guest.');

---

yeah, except when a visitor comes from 2 to 1 via a link it shouldnt say welcome affiliate. only a special link only affilates should know would say that.

wow thanks twee..

except 1 thing.. for <script is that for javascript?
and would i be able to change that?

Quote:

---

except 1 thing.. for <script is that for javascript?

---

Yes. You never specified what sort of script you were talking about, so I naturally assumed the most obvious one.

Quote:

---

and would i be able to change that?

---

Unlikely. Server-side scripts are very different from client-side scripts from the point of view of the client (which is what the PHP script would be acting as); you'd need to devise an entirely different method, if it were possible at all.

PHP Code:

---

<?php
$affiliate = 'somesite.com'; //Don't add anyhting that isn't ALWAYS in the URL
if(strpos(strtolower($_SERVER['HTTP_REFERER']),$affiliate) !== false){
echo 'Welcome Affiliate';
}
else{
echo 'Welcome Guest';
}
?>

---

This should work for both #1 #2 as long as you change somesite.com to the opposite;

Quote:

---

Code:

---

strpos(strtolower(

---

---

What's wrong with stripos()?

Relying on HTTP_REFERER (except as a convenience) is dangerous, since a lot of firewalls strip it.

Quote:

---

Originally Posted by Twey

What's wrong with stripos()?

---

The large number of PHP 4 servers :(

Quote:

---

Originally Posted by Twey

Relying on HTTP_REFERER (except as a convenience) is dangerous, since a lot of firewalls strip it.

---

As long as it is not mission critical I don't see why HTTP_REFERER should not be used. If it has to be one hundred percent accurate then the get variable method I posted a couple posts ago should be used.

Ah, so 'tis.

Thanks..

is it possible to only do it once?

Because i want a script that also includes to another website, and that same script that checks another website.

and if this wont stop, then it would be an endless loop.