How to create RSS feed for my site

I am coding a Tutorials site script with PHP,,,, i finished maximum of coding but i don't have any idea how to create a rss script,,, in my site there are different categories, so i need rss feed for all categories and also for individual categories,,,,

do i need to create a separate table in database for RSS feed ???

 

Have you looked at framework.zend.com/manual/en/zend.feed.writer.html ?

 

learn the structure of xml and generate your data into this format

 

You can get a nice tutorial for developing dynamic RSS feed for you site in PHP from the following website:
http://net.tutsplus.com/tutorials/other/feeds-101/#more-7414

 

w3c has defined the structure for rss feed and atom feed. It will be a xml strict format. You can find that and create the one for you.

By default it will have a title, author, date, and content tags.

You will have to specify the namespace as well.

 

save the below code as rssfeed.php

on the page which you need to be rss, add a link like this:
http://yoursite.com/rssfeed.php?url=<? echo http://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];?>

Now whenever somebody clicks the link, the page will be converted to a rss feed.

<?

$url= trim($_GET['url'];
$result=@file_get_contents($url);
$channel_title = "";
if (preg_match('/<title>(.*?)<\/title>/si', $result, $match) > 0) { $channel_title = $match[1];}
if (preg_match('/<meta description(.*?)<\/description>"/si', $result, $match) > 0) { $channel_desc = $match[1];}
if ($channel_desc == "") $channel_desc = $url;
$title = wsstrip($channel_title);
$result = preg_replace("'<style[^>]*>.*</style>'siU",'',$result);
$result = preg_replace("'<head[^>]*>.*</head>'siU",'',$result);
$str= strip_tags($result);

$str2= explode("\n",$str);

foreach($str2 as $key => $value){
    $str2_len[$key]  = strlen($value);
} 
array_multisort($str2_len, SORT_DESC, SORT_NUMERIC, $str2);
$description =trim(shorten($str2[0],100));
//$description=utf8_encode($description);
///////////////////////////////////////////////
 header("Content-Type: text/xml");
  $output ="";
  $output .= "<?xml version=\"1.0\" encoding=\"ISO-8859-1\" ?>\n";
  $output .= "<!-- generator=\"RSSIT/2.0\" -->\n";
  $output .= "<rss version=\"2.0\">\n";
  $output .= "<channel>\n";
  $output .= "<title>". htmlentities(strip_tags($link)) ."</title>\n";
  $output .= "<link>". htmlentities($link) ."</link>\n";
  $output .= "<description>The RSS feed of ". htmlentities(strip_tags($channel_title)) ." at ".$link." </description>\n";
  $output .= "<webMaster>". htmlentities("artikels@mowspace.co.za") ."(Godfrey Philander)</webMaster>\n";
  $output .= "<generator>". htmlentities("RSSIT") ."</generator>\n";
  $output .= "<language>en</language>\n";
  $output .= "<item>\n";
  $output .= "<title>". htmlentities($title) ."</title>\n";
  $output .= "<link>". htmlentities($url) ."</link>\n";
  $output .= "<description>". htmlentities($description)."</description>\n";
  $output .= "</item>\n";
  $output .= "</channel>\n";
  $output .= "</rss>\n";
  print $output;
  ////////////////////////////////////////////

function shorten($string,$maxWords,$end=NULL)
{
if (!isset($end))
{
$end = '';
}
$temp = explode(' ',$string);
for ($i=0; $i<$maxWords; $i++)
{
$temp2[] = $temp[$i];
}
$endResult = implode(' ',$temp2).$end;
unset($temp,$temp2);
return $endResult;
}

function wsstrip($str)
{
 $str=ereg_replace("[\r\t\n]"," ",$str);
 $str=ereg_replace (' +', ' ', trim($str));
return $str;
}
?>

PHP:

 

Thank you very much, this is exactly what i need for my site

But why the description is the same on every page? How I can get the content of the page to add to the description?

 

<?

$url= trim($_GET['url'];
$result=@file_get_contents($url);
$channel_title = "";
if (preg_match('/<title>(.*?)<\/title>/si', $result, $match) > 0) { $channel_title = $match[1];}
if (preg_match('/<META name=\"DESCRIPTION\" content=\"(.*?)\">/si', $result, $match) > 0) { $head_description = $match[1];}
$title = wsstrip($channel_title);
$result = preg_replace("'<head[^>]*>.*<\/head>'siU",'',$result);
$str= strip_tags($result);
$str2= explode("\n",$str);
$str3= get_longest_value($str2);
$description =trim(shorten($str3,100));
if(trim($description) ==""){$description=$head_description;}
///////////////////////////////////////////////
 header("Content-Type: text/xml");
  $output ="";
  $output .= "<?xml version=\"1.0\" encoding=\"ISO-8859-1\" ?>\n";
  $output .= "<!-- generator=\"RSSIT/2.0\" -->\n";
  $output .= "<rss version=\"2.0\">\n";
  $output .= "<channel>\n";
  $output .= "<title>". htmlentities(strip_tags($link)) ."</title>\n";
  $output .= "<link>". htmlentities($link) ."</link>\n";
  $output .= "<description>The RSS feed of ". htmlentities(strip_tags($channel_title)) ." at ".$link." </description>\n";
  $output .= "<webMaster>". htmlentities("artikels@mowspace.co.za") ."(Godfrey Philander)</webMaster>\n";
  $output .= "<generator>". htmlentities("RSSIT") ."</generator>\n";
  $output .= "<language>en</language>\n";
  $output .= "<item>\n";
  $output .= "<title>". htmlentities($title) ."</title>\n";
  $output .= "<link>". htmlentities($url) ."</link>\n";
  $output .= "<description>". htmlentities($description)."</description>\n";
  $output .= "</item>\n";
  $output .= "</channel>\n";
  $output .= "</rss>\n";
  print $output;
  ////////////////////////////////////////////

  function get_longest_value($array) {
    // Some don't like to initialize, I do
    $longest = NULL;
    $longestLen = -1;
    foreach ($array as $value) {
        $len = strlen($value);
        if($len>$longestLen) {
            $longest = $value;
            $longestLen = $len;
        }
    }
    $longest = str_replace("\r\n", "\n", $longest);
    if (get_magic_quotes_gpc()) { return stripslashes($longest); }
    return $longest;
} 


function shorten($string,$maxWords,$end=NULL)
{
if (!isset($end))
{
$end = '';
}
$temp = explode(' ',$string);
for ($i=0; $i<$maxWords; $i++)
{
$temp2[] = $temp[$i];
}
$endResult = implode(' ',$temp2).$end;
unset($temp,$temp2);
return $endResult;
}

function wsstrip($str)
{
 $str=ereg_replace("[\r\t\n]"," ",$str);
 $str=ereg_replace (' +', ' ', trim($str));
return $str;
}
?>

PHP:

 

@ puppetguy

For the meta scraping you could use -> get_meta_tags()

You could also make use of php's SimpleXML