i try out the example from this post http://www.phpwcms.de/forum/viewtopic.p ... ternal+rss but it doesn't work and i thought it would be better, if i use a replacement tag.
so, i start with a RSS Parser class and my basic PHP knowlegde and here is the result. maybe i've wrote some lousy code, but it works for me and if you make correction, please tell us
This is the tag: {RSS:COUNT(0=all|n):TEASER(0=no teaser|-1 =all|n):URL}
Just upload a file to phpwcms_template/frontend_render/external_rss.php
with the following content:
Code: Select all
<?php
/********************************************
titel: {RSS} Replacement-Tag
description: {RSS:COUNT(0=all|n):TEASER(0=no teaser|-1 =all|n):URL}
(n = a number)
COUNT - how much items should be shown
TEASER - if 0 there bill be show no description (if available)
if -1 the complete content will be shown
if n only n chars as teaser
example: {RSS:5:175:http://www.disquiet.com/disquiet.rss}
{RSS:0:-1:http://www.disquiet.com/disquiet.rss}
notice: $show_remote_pic 1/0 if the feed contains an url of a pic
it will be sown (1) or not (0)
author: Marcus Obst, using the Parserclass from Vojtech Semecky
last modified: 20.01.2005 created
********************************************/
function render_external_rss($string='',$item_limit=NULL,$teaser='') {
//-- CHANGE here
$show_remote_pic = 0; // if there is a website logo, should it be shown?
//-- /CHANGE end
$rss_all = '';
$string = preg_replace('/\{RSS:(\d+):(\-1|\d+):(.*?)\}/e', '"$3"', $string);
$item_limit = preg_replace('/\{RSS:(\d+):(\-1|\d+):(.*?)\}/e', '"$1"', $item_limit);
$teaser = preg_replace('/\{RSS:(\d+):(\-1|\d+):(.*?)\}/e', '"$1"', $teaser);
// Create lastRSS object
$rss = new lastRSS;
// Set cache dir and cache time limit (1200 seconds)
// (don't forget to chmod cache dir to 777 to allow writing)
$rss->cache_dir = './temp';
$rss->cache_time = 1200;
$rss->items_limit = $item_limit;
// Try to load and parse RSS file
// MO: $string enthält die RSS URL
if ($rs = $rss->get($string)) {
// Here you can build your own output
// Show website logo (if presented)
if ($rs[image_url] != '' & $show_remote_pic != 0) {
$rss_all = $rss_all."<a href=\"$rs[image_link]\"><img src=\"$rs[image_url]\" alt=\"$rs[image_title]\" vspace=\"1\" border=\"0\" /></a><br />\n";
}
// Show clickable website title
$rss_all = $rss_all."<b><a href=\"$rs[link]\">$rs[title]</a></b><br />\n";
// Show website description
$rss_all = $rss_all."$rs[description]<br />\n";
// Show last published articles (title, link, description)
$rss_all = $rss_all."<ul>\n";
foreach($rs['items'] as $item) {
$rss_all = $rss_all."\t<li><a href=\"$item[link]\">".$item['title']."</a><br />".substr($item['description'],0,$teaser)."</li>\n";
}
$rss_all = $rss_all."</ul>\n";
}
else {
$rss_all= $rss_all."Error: It's not possible to reach RSS file...\n";
}
return $rss_all;
}
if( ! ( strpos($content["all"],'{RSS')===false ) ) {
$content["all"] = preg_replace('/\{RSS:(\d+):(\-1|\d+):(.*?)\}/e','render_external_rss("$3","$1","$2");',$content["all"]);
}
//-----------------------------------------------------------------------------------------------------------------------------
//--- HERE COMES THE PARSERCLASS ----------------------------------------------------------------------------------------------
//-----------------------------------------------------------------------------------------------------------------------------
/*
======================================================================
lastRSS 0.9.1
Simple yet powerfull PHP class to parse RSS files.
by Vojtech Semecky, webmaster @ webdot . cz
Latest version, features, manual and examples:
http://lastrss.webdot.cz/
----------------------------------------------------------------------
LICENSE
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License (GPL)
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
To read the license please visit http://www.gnu.org/copyleft/gpl.html
======================================================================
*/
/**
* lastRSS CLASS
* Simple yet powerfull PHP class to parse RSS files.
*/
class lastRSS {
// -------------------------------------------------------------------
// Public properties
// -------------------------------------------------------------------
var $default_cp = 'UTF-8';
var $CDATA = 'nochange';
var $cp = '';
var $items_limit = 0;
var $stripHTML = False;
var $date_format = '';
// -------------------------------------------------------------------
// Private variables
// -------------------------------------------------------------------
var $channeltags = array ('title', 'link', 'description', 'language', 'copyright', 'managingEditor', 'webMaster', 'lastBuildDate', 'rating', 'docs');
var $itemtags = array('title', 'link', 'description', 'author', 'category', 'comments', 'enclosure', 'guid', 'pubDate', 'source');
var $imagetags = array('title', 'url', 'link', 'width', 'height');
var $textinputtags = array('title', 'description', 'name', 'link');
// -------------------------------------------------------------------
// Parse RSS file and returns associative array.
// -------------------------------------------------------------------
function Get ($rss_url) {
// If CACHE ENABLED
if ($this->cache_dir != '') {
$cache_file = $this->cache_dir . '/rsscache_' . md5($rss_url);
$timedif = @(time() - filemtime($cache_file));
if ($timedif < $this->cache_time) {
// cached file is fresh enough, return cached array
$result = unserialize(join('', file($cache_file)));
// set 'cached' to 1 only if cached file is correct
if ($result) $result['cached'] = 1;
} else {
// cached file is too old, create new
$result = $this->Parse($rss_url);
$serialized = serialize($result);
if ($f = @fopen($cache_file, 'w')) {
fwrite ($f, $serialized, strlen($serialized));
fclose($f);
}
if ($result) $result['cached'] = 0;
}
}
// If CACHE DISABLED >> load and parse the file directly
else {
$result = $this->Parse($rss_url);
if ($result) $result['cached'] = 0;
}
// return result
return $result;
}
// -------------------------------------------------------------------
// Modification of preg_match(); return trimed field with index 1
// from 'classic' preg_match() array output
// -------------------------------------------------------------------
function my_preg_match ($pattern, $subject) {
// start regullar expression
preg_match($pattern, $subject, $out);
// if there is some result... process it and return it
if(isset($out[1])) {
// Process CDATA (if present)
if ($this->CDATA == 'content') { // Get CDATA content (without CDATA tag)
$out[1] = strtr($out[1], array('<![CDATA['=>'', ']]>'=>''));
} elseif ($this->CDATA == 'strip') { // Strip CDATA
$out[1] = strtr($out[1], array('<![CDATA['=>'', ']]>'=>''));
}
// If code page is set convert character encoding to required
if ($this->cp != '')
//$out[1] = $this->MyConvertEncoding($this->rsscp, $this->cp, $out[1]);
$out[1] = iconv($this->rsscp, $this->cp.'//TRANSLIT', $out[1]);
// Return result
return trim($out[1]);
} else {
// if there is NO result, return empty string
return '';
}
}
// -------------------------------------------------------------------
// Replace HTML entities &something; by real characters
// -------------------------------------------------------------------
function unhtmlentities ($string) {
// Get HTML entities table
$trans_tbl = get_html_translation_table (HTML_ENTITIES, ENT_QUOTES);
// Flip keys<==>values
$trans_tbl = array_flip ($trans_tbl);
// Add support for ' entity (missing in HTML_ENTITIES)
$trans_tbl += array(''' => "'");
// Replace entities by values
return strtr ($string, $trans_tbl);
}
// -------------------------------------------------------------------
// Parse() is private method used by Get() to load and parse RSS file.
// Don't use Parse() in your scripts - use Get($rss_file) instead.
// -------------------------------------------------------------------
function Parse ($rss_url) {
// Open and load RSS file
if ($f = @fopen($rss_url, 'r')) {
$rss_content = '';
while (!feof($f)) {
$rss_content .= fgets($f, 4096);
}
fclose($f);
// Parse document encoding
$result['encoding'] = $this->my_preg_match("'encoding=[\'\"](.*?)[\'\"]'si", $rss_content);
// if document codepage is specified, use it
if ($result['encoding'] != '')
{ $this->rsscp = $result['encoding']; } // This is used in my_preg_match()
// otherwise use the default codepage
else
{ $this->rsscp = $this->default_cp; } // This is used in my_preg_match()
// Parse CHANNEL info
preg_match("'<channel.*?>(.*?)</channel>'si", $rss_content, $out_channel);
foreach($this->channeltags as $channeltag)
{
$temp = $this->my_preg_match("'<$channeltag.*?>(.*?)</$channeltag>'si", $out_channel[1]);
if ($temp != '') $result[$channeltag] = $temp; // Set only if not empty
}
// If date_format is specified and lastBuildDate is valid
if ($this->date_format != '' && ($timestamp = strtotime($result['lastBuildDate'])) !==-1) {
// convert lastBuildDate to specified date format
$result['lastBuildDate'] = date($this->date_format, $timestamp);
}
// Parse TEXTINPUT info
preg_match("'<textinput(|[^>]*[^/])>(.*?)</textinput>'si", $rss_content, $out_textinfo);
// This a little strange regexp means:
// Look for tag <textinput> with or without any attributes, but skip truncated version <textinput /> (it's not beggining tag)
if (isset($out_textinfo[2])) {
foreach($this->textinputtags as $textinputtag) {
$temp = $this->my_preg_match("'<$textinputtag.*?>(.*?)</$textinputtag>'si", $out_textinfo[2]);
if ($temp != '') $result['textinput_'.$textinputtag] = $temp; // Set only if not empty
}
}
// Parse IMAGE info
preg_match("'<image.*?>(.*?)</image>'si", $rss_content, $out_imageinfo);
if (isset($out_imageinfo[1])) {
foreach($this->imagetags as $imagetag) {
$temp = $this->my_preg_match("'<$imagetag.*?>(.*?)</$imagetag>'si", $out_imageinfo[1]);
if ($temp != '') $result['image_'.$imagetag] = $temp; // Set only if not empty
}
}
// Parse ITEMS
preg_match_all("'<item(| .*?)>(.*?)</item>'si", $rss_content, $items);
$rss_items = $items[2];
$i = 0;
$result['items'] = array(); // create array even if there are no items
foreach($rss_items as $rss_item) {
// If number of items is lower then limit: Parse one item
if ($i < $this->items_limit || $this->items_limit == 0) {
foreach($this->itemtags as $itemtag) {
$temp = $this->my_preg_match("'<$itemtag.*?>(.*?)</$itemtag>'si", $rss_item);
if ($temp != '') $result['items'][$i][$itemtag] = $temp; // Set only if not empty
}
// Strip HTML tags and other bullshit from DESCRIPTION
if ($this->stripHTML && $result['items'][$i]['description'])
$result['items'][$i]['description'] = strip_tags($this->unhtmlentities(strip_tags($result['items'][$i]['description'])));
// Strip HTML tags and other bullshit from TITLE
if ($this->stripHTML && $result['items'][$i]['title'])
$result['items'][$i]['title'] = strip_tags($this->unhtmlentities(strip_tags($result['items'][$i]['title'])));
// If date_format is specified and pubDate is valid
if ($this->date_format != '' && ($timestamp = strtotime($result['items'][$i]['pubDate'])) !==-1) {
// convert pubDate to specified date format
$result['items'][$i]['pubDate'] = date($this->date_format, $timestamp);
}
// Item counter
$i++;
}
}
$result['items_count'] = $i;
return $result;
}
else // Error in opening return False
{
return False;
}
}
}
?>
unfortunately i get the following error
any idea?Warning: Cannot modify header information - headers already sent by (output started at phpwcms_template/inc_script/frontend_render/external_rss.php:298) in index.php on line 124
greetings marcus
ps: sorry for my lousy english
