I’m having trouble getting this to work with the latest stable CI version of this posting.
I have modified the arrays to match the XML format being used:
<?xml version="1.0" encoding="UTF-8"?>
<entry>
<title type="html"></title>
<id></id>
<published></published>
<content type="html"></content>
</entry>
But CI gives me this error message:
A PHP Error was encountered
Severity: Warning
Message: Invalid argument supplied for foreach()
Filename: libraries/RSSParser.php
Line Number: 100
Line Numbers: 99 & 100
//Build the item array
foreach ($xml->channel->item as $item)
Any help or do you need more information? I have tried both an external RSS feed and just a simple XML file I made as shown above.
Here is the complete code with the modifications I made.
<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
/*
* This class is written based entirely on the work found below
* www.techbytes.co.in/blogs/2006/01/15/consuming-rss-with-php-the-simple-way/
* All credit should be given to the original author
*/
class RSSParser
{
// ===================//
//Instance vars //
// ===================//
/* Feed URI */
var $feed_uri;
/* Associative array containing all the feed items */
var $data;
/* Store RSS Channel Data in an array */
var $channel_data;
/* Boolean variable which indicates whether an RSS feed was unavailable */
var $feed_unavailable;
/* Cache lifetime */
var $cache_life;
/* Flag to write to cache - defaulted to false*/
var $write_cache_flag = false;
/* Code Ignitor cache directory */
var $cache_dir;
// ================ //
// Constructor //
// ================ //
function RSSParser($params) {
$this->CI =& get_instance();
$this->cache_dir = ($this->CI->config->item('cache_path') == '') ? BASEPATH.'cache/' : $this->CI->config->item('cache_path');
//$this->cache_dir = '/system/cache';
$this->cache_life = $params['life'];
$this->feed_uri = $params['url'];
$this->current_feed["id"] = '';
$this->current_feed["title"] = '';
$this->current_feed["published"] = '';
$this->current_feed["content"] = '';
$this->data = array();
$this->channel_data = array();
//Attempt to parse the feed
$this->parse();
}
// =============== //
// Methods //
// =============== //
function parse() {
//Are we caching?
if ($this->cache_life != 0)
{
$filename = $this->cache_dir.'rss_Parse_'.md5($this->feed_uri);
//is there a cache file ?
if (file_exists($filename))
{
//Has it expired?
$timedif = (time() - filemtime($filename));
if ($timedif < ( $this->cache_life * 60))
{
//its ok - so we can skip all the parsing and just return the cached array here
$this->data = unserialize(implode('', file($filename)));
return true;
}
//So raise the falg
$this->write_cache_flag = true;
} else {
//Raise the flag to write the cache
$this->write_cache_flag = true;
}
}
//Parse the document
$rawFeed = file_get_contents($this->feed_uri);
$xml = new SimpleXmlElement($rawFeed);
//Assign the channel data
$this->channel_data['id'] = $xml->channel->id;
$this->channel_data['title'] = $xml->channel->title;
$this->channel_data['published'] = $xml->channel->published;
$this->channel_data['content'] = $xml->channel->content;
//Build the item array
foreach ($xml->channel->item as $item)
{
$data = array();
$data['id'] = (string) $item->id;
$data['title'] = (string) $item->title;
$data['published'] = (string) $item->published;
$data['content'] = (string) $item->content;
$this->data[] = $data;
}
//Do we need to write the cache file?
if ($this->write_cache_flag)
{
if ( ! $fp = @fopen($filename, 'wb'))
{
echo "ERROR";
log_message('error', "Unable to write cache file: ".$filename);
return;
}
flock($fp, LOCK_EX);
fwrite($fp, serialize($this->data));
flock($fp, LOCK_UN);
fclose($fp);
}
return true;
}
/* Return the feeds one at a time: when there are no more feeds return false
* @param No of items to return from the feed
* @return Associative array of items
*/
function getFeed($num) {
$c = 0;
$return = array();
foreach($this->data AS $item)
{
$return[] = $item;
$c++;
if($c == $num) break;
}
return $return;
}
/* Return channel data for the feed */
function & getChannelData() {
$flag = false;
if(!empty($this->channel_data)) {
return $this->channel_data;
} else {
return $flag;
}
}
/* Were we unable to retreive the feeds ? */
function errorInResponse() {
return $this->feed_unavailable;
}
}
?>
