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Posted by Steve on 10/18/06 14:50
"Kentor" <kentor@gmail.com> wrote in message
news:1161182321.585469.95080@b28g2000cwb.googlegroups.com...
| Hello, is there a script that would go to a page that i would indicate
| and look for a specific links... to sort of make sure that reciprocal
| links are there when promised by other websites...
kentor,
this is typically called screen-scraping. generally, one is simply looking
for all links. here is a quick example of that. the only change you'd need
to make (assuming you're using php 5) is to look for your specific link in
the results (which is in the loop). this source is from:
http://blog.outer-court.com/archive/2004_06_23_index.html
<?
header("Content-type: text/html; charset=utf-8");
?><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"DTD/xhtml1-strict.dtd">
<html xmlns=http://www.w3.org/1999/xhtml xml:lang="en" lang="en">
<head>
<title>PHP5 Screen-Scraping</title>
</head>
<body>
<?
$dom = new domdocument;
$url = 'http://news.google.com';
@$dom->loadHTMLFile($url);
$xpath = new domxpath($dom);
$xNodes = $xpath->query('//a[@class="y"]');
echo '<h1>Google News Headlines</h1>';
echo '<ul>';
foreach ($xNodes as $xNode)
{
$sLinktext = @$xNode->firstChild->data;
$sLinkurl = $xNode->getAttribute('href');
if ($sLinktext != '' && $sLinkurl != '')
{
echo '<li><a href="' . $sLinkurl . '">' .
$sLinktext . '</a></li>';
echo "\r\n";
}
}
echo '</ul>';
?>
</body>
</html>
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