PHP - Strange results when I try and retrieve some websites ?? get_meta_tags & Curl

Here's my code:
<?
$URL[1] = 'http://seolinkdirectory.org'; 
$URL[2] = 'http://moz.com';

foreach($URL as $Key => $Website)
{
	$Meta = get_meta_tags($Website);
	foreach($Meta as $Key1 => $Value1)
	{
		echo $Website . ' ' . $Key1 . ' = ' . $Value1 . '<br>';	
	}
	$Page = GetWebPage($Website);
	echo $Website . "<br><br><br>Webpage <br><br><br><br>" . $Page;
}

function GetWebPage($URL) 
{
	$ua = 'Mozilla/5.0 (Windows NT 5.1; rv:16.0) Gecko/20100101 Firefox/16.0 (ROBOT)';
     
	

    $ch             = curl_init();

    curl_setopt($ch, CURLOPT_URL,            $URL);
    curl_setopt($ch, CURLOPT_USERAGENT,      $ua);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, True);
    curl_setopt($ch, CURLOPT_NOBODY,         False);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, True);
    curl_setopt($ch, CURLOPT_BINARYTRANSFER, True);
    $content = curl_exec($ch);
	curl_close($ch);
	return $content;
}
?>

Open in new window


When I run this code, it works fine for the domain http://moz.com , but for http://seolinkdirectory.org the get_meta_tags function returns nothing and the GetWebPage function returns a load of gibberish!

Can anyone identify why this is happening ?
ChilliSauceAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Ray PaseurCommented:
Check these pages with "view source."  It looks like the seo link directory is generated using Javascript libraries.  This is a technique that some publishers have adopted to prevent "screen scraping" with cURL.  It is a way that they protect their copyrighted content.  If you want access to their content and they want you to have programmatic access (this is probably a paid relationship) the publisher will usually expose an API.  You might ask about that.
0
gr8gonzoConsultantCommented:
Sure. This is because the seolinkdirectory.org is returning a gzip-compressed webpage, not the raw HTML. My suggestion would be to add this curl option to GetWebPage:

curl_setopt($ch, CURLOPT_ENCODING, "none");

That way, the site will return the standard, uncompressed HTML (since it thinks cURL can't handle gzip) and you'll be able to see it normally.

Then, save the results of GetWebPage to a local, temporary file and then use get_meta_tags on that local file, and unlink() it afterwards. You'll get the right results AND you'll save an extra web call.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
PHP

From novice to tech pro — start learning today.