Use Google Cache on your search script?

[MrDude]

I purchased a search script recently and for the cache it just had a hyperlink to googles cache, I didnt want this, I wanted it on my own site, as if it was my own cache, I couldnt find anything already made so I created this small php script.

To use the cache simply encode the URL you want the cache of

eg if you have $searchkw and $url in your current search script, and you want to create a hyperlink to the cache, you would simply do:

<?php
$enc_url = base64_encode($url);
echo"<a href=\"cache.php?u=$url&q=$searchkw\">Cached Version</a>\n";
?>

If you dont want keyword highlighting on, simply remove the &q=$searchkw

My example:
http://plerocs.com/result/20/chuck+norris

Click on cached page to see the script in action.

<?php
$url = $_GET['u'];
$url = base64_decode($url);
$kw = $_GET['q'];
$kw = str_replace(" ", "+", "$kw");
$useragent = $_SERVER['HTTP_USER_AGENT'];

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,"http://209.85.173.132/search?q=cache:$url+$kw");
curl_setopt($ch, CURLOPT_USERAGENT, $useragent);
curl_setopt($ch, CURLOPT_REFERER,"http://google.com");
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$contents = curl_exec ($ch);
curl_close ($ch);

$contents = str_replace("This is Google&#39;s cache of", "This is our cache of", "$contents");
$contents = str_replace(" <a href=\"http://www.google.com/intl/en/help/features_list.html#cached\" style=\"text-decoration:underline;color:#00c\">Learn more</a>", "", "$contents");
$contents = str_replace("<a href=\"http://209.85.173.132/search?q=cache:$url+$kw&amp;hl=en&strip=1\" style=\"text-decoration:underline;color:#00c\">Text-only version</a>", "", "$contents");
$contents = str_replace("These search terms are highlighted", "Your search terms are highlighted", "$contents");

if(strpos($contents, "</b> - did not match any documents.  <br>"))
{
echo"<h1>Error</h1>\n";
echo"<hr>\n";
echo"Unfortunately the page you wanted does not yet exist in our cache. You may visit the page by clicking the link below:<br>\n";
echo"<a href=\"$url\" rel=\"nofollow\">$url</a>\n";
}else{ 
echo"$contents";
}
?>

[Dale Hubbard]

That's cool to share! I'm just wondering how deep the rules are buried within Google about displaying their cache as your own. Is this an issue?

[MrDude]

Im sorry, i havent a clue, I got the idea a couple of hours ago and rushed ahead with it. Use at your own risk, I guess. I couldnt find an API or any other script doing this, Im pretty sure it will be okay though as long as your not excessively using it