[SOLVED] Check for meta tag

[AXiSS]

I want to have a feature on my site where the user is provided a meta tag consisting of a random 32 character string, of which they would place on their site's index page. Then I'd have a page on my site that checks if the specified site contains that meta tag. (Similiar to what you need to do if you have ever used Google Webmaster tools)

I am guessing this requires the index page file of the site to be moved into a temporary folder on why server and then it gets scanned for the meta. I think I can do everything up to the scanning part. What would be the best way to do this? Or is there a better way to verify if the user owns that site or not?

[shocker-z]

well say you tell them to put this onto there page
[code]
<META name="sitekey" content="thisisa32keycodeforwebsites12345">
[/code]

then you could use this code to check that they have that key

[code]
  $metakeysite=file_get_contents('http://www.thewebsite.com/');
  $keyposs1 = strpos ($metakeysite, '<META name="sitekey" content="');
  $keyposs2= strpos ($metakeysite, '">', $keyposs1);
  $key= substr($metakeysite, $keyposs1+30, $keyposs2-($keyposs1+30));
[/code]


that should give the variable $key with the key from meta tag and im sure you can do the validation :)

Regards
Liam

[AXiSS]

Not working, using:

[code]$metakeysite = file_get_contents($url);
$keyposs1 = strpos($metakeysite, '<meta name="wakey" content="');
$keyposs2 = strpos($metakeysite, '">', $keyposs1);
$key = substr($metakeysite, $keyposs1+30, $keyposs2-($keyposs1+30));

if($key == $meta_key){
                                        echo 'GOOD!';
                      } else {
                                        echo 'BAD!';
}[/code]

Where $url is the site to check...

[fert]

[code]
preg_match("<meta name=\"wakey\" content=\"(.*?)\">",$contents,$matches);
if($matches[1]==$key)
{
echo "Good";
}
else
{
echo "Bad";
}
[/code]

[AXiSS]

Could I get an explanation fo what that code does?

Also, the variable $meta_key is what I need to verify against. (It is the meta key content code.)

[AXiSS]

Is something special supposed to go in content? I'm confused... please help!

[fert]

The contents of the webpage

[AXiSS]

??? Now I am extremely confused...

In the code you provided, could you please define what each variable is?

[fert]

$contents: contents of a webpage
$matches: array containing the result of the Regex evaluation
$key: the key you want to them to have in the <meta> tag

[AXiSS]

So the full code should be something like:

[code]
$contents = file_get_contents($url);

$key = 32charactercodetomatchto12345678;

preg_match("<meta name=\"wakey\" content=\"(.*?)\">",$contents,$matches);
if($matches[1]==$key)
{
echo "Good";
}
else
{
echo "Bad";
}
[/code]

Correct?

[fert]

yep

[AXiSS]

Thank you!  :D