Code for meta crawler!

[tino2099]

if you are thinking of putting up an "link exchage" page in your site it will be nice if you'll know if they did exchange your link...

<?php

function check_reciprocal($url,$title)
{


$contents = getUrlContents($url);

if (isset($contents) && is_string($contents))
{
if(preg_match("/\b".$title."\b/", $contents))
{
return true;
}
else return false;
}

}


function getUrlContents($url, $maximumRedirections = null, $currentRedirection = 0)
{
$result = false;

$contents = @file_get_contents($url);

// Check if we need to go somewhere else

if (isset($contents) && is_string($contents))
{
preg_match_all('/<[\s]*meta[\s]*http-equiv="?REFRESH"?' . '[\s]*content="?[0-9]*;[\s]*URL[\s]*=[\s]*([^>"]*)"?' . '[\s]*[\/]?[\s]*>/si', $contents, $match);

if (isset($match) && is_array($match) && count($match) == 2 && count($match[1]) == 1)
{
if (!isset($maximumRedirections) || $currentRedirection < $maximumRedirections)
{
return getUrlContents($match[1][0], $maximumRedirections, ++$currentRedirection);
}

$result = false;
}
else
{
$result = $contents;
}
}

return $contents;
}
?>
this code will come in handy.......!!!!!!

[francisho]

whoa.....

sorry bout this as i'm not from the programming side, but these things looks really complicated, if you don't mind, could you explain line by line of what they do and their specific functions?

a brief idea of what each line do would be great

[tino2099]

hmmm...

if you want your visitor to exchange link with your site... they will need to go to a linked exchange page...

check_reciprocal($url,$title) --> will be responsible for checking if you site was linked to their website hence the term "linked exchange"... it will be tiresome if you'll be the one checking for every site requesting to exchange with you...

getUrlContents($url, $maximumRedirections = null, $currentRedirection = 0) --> will crawl or grab the code of a given page of a url...

[francisho]

ah ic, tat's much more comprehensive for me heheheh

thanks a lot tino