The following is assuming you are getting the links from a web page.
PHP Code:
class fetchlinks
{
var $_isolated_links;
var $_txt;
var $href;
var $url;
var $urls = array();
function fetchlinks($_url)
{
$this->_txt=file_get_contents($_url);
$this->_txt=str_replace("<A",'<a',$this->_txt);
$this->_txt=str_replace("</A>",'</a>',$this->_txt);
$this->url=$_url;
}
function _isolate()
{
$j = 0;
for ($i=0;$i<=strlen($this->_txt);$i++)
{
if (substr($this->_txt,$i,1+1)=="<a")
{
$j++;
$st=$i;
$k=$i;
while (substr($this->_txt,$k,3)!="/a>")
{
$k++;
}
$en=$k+2+1;
$this->_isolated_links[$j]=substr($this->_txt,$st,$en-$st);
}
}
}
function get_links()
{
$this->_isolate();
$k=0;
$n=0;
for ($i=1;$i<=count($this->_isolated_links);$i++)
{
for ($j=1;$j<=strlen($this->_isolated_links[$i]);$j++)
{
if (substr($this->_isolated_links[$i],$j,5)=='href=')
{
$n++;
$st=$j+5;
$m=$j+5;
while (substr($this->_isolated_links[$i],$m,1)!='>')
{
$m++;
}
$en=$m;
$temp=substr($this->_isolated_links[$i],$st,$en-$st);
if (strpos($temp,' ')>0) $temp=substr($temp,0,strpos($temp,' '));
$temp=str_replace('"','',$temp);
$temp=str_replace("'","",$temp);
if (substr($temp,0,1)=="/") $temp="$this->url".$temp;
if (substr($temp,0,7)!="http://") $temp="$this->url/".$temp;
if (!isset($p)) $p=0;
$this->href[0]="";
if (substr($temp,0,7)=="http://" && $temp!=$this->href[$p])
{
$p++;
$this->href[$p]=$temp;
}
}
}
}
}
function get_array()
{
$this->get_links();
for ($i=1;$i<count($this->href);$i++)
{
if (!in_array($this->href[$i], $this->urls))
{
array_push($this->urls, $this->href[$i]);
}
}
return $this->urls;
}
}
Usage
PHP Code:
$spider=new fetchlinks("CHANGE ME");
foreach ($spider->get_array() as $url)
{
echo $url.'<br>';
}
I did not write this so can't really take credit for it. Can't remember where I found it (possibly the php manual comments). Change 'CHANGE ME' to the actual document name and path to where the document you wish to open is.
P.S. This is assuming you wanted a php script you never said. It is always best to post in which language you want a solution.
02-12-2006, 04:40 AM
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