xml - Rss parse error with PHP -

when try fetch , parse indian express rss feed, following error occurred.

a php error encountered
severity: warning
message: illegal string offset 'content'
filename: libraries/rssparser.php(114) : eval()'d code
line number: 1

a php error encountered
severity: warning
message: illegal string offset 'encoded'
filename: libraries/rssparser.php(114) : eval()'d code
line number: 1

a php error encountered
severity: warning
message: illegal string offset 'content'
filename: libraries/rssparser.php(114) : eval()'d code
line number: 1

i using rssparser library

rssparser.php

<?php   // original php code chirp internet: www.chirp.com.au   // please acknowledge use of code including header.    class rssparser   {     // keeps track of current , preceding elements     var $tags = array();      // array containing feed data     var $output = array();      // return value display functions     var $retval = "";      var $errorlevel = 0;      // constructor new object     function rssparser1($file)     {        $errorlevel = error_reporting();       error_reporting($errorlevel & ~e_notice);        // instantiate xml-parser , assign event handlers       $xml_parser = xml_parser_create("");       xml_set_object($xml_parser, $this);       xml_set_element_handler($xml_parser, "startelement", "endelement");       xml_set_character_data_handler($xml_parser, "parsedata");        // open file reading , send data xml-parser       $data = preg_match("/^http/", $file) ? file_get_contents($file) : file_get_contents($file);        //print_r($data);         xml_parse($xml_parser, $data) or die(         sprintf("airtel: error <b>%s</b> @ line <b>%d</b><br>",         xml_error_string(xml_get_error_code($xml_parser)),         xml_get_current_line_number($xml_parser))       );        // dismiss xml parser       xml_parser_free($xml_parser);        error_reporting($errorlevel);     }      function startelement($parser, $tagname, $attrs=array())     {       // rss 2.0 - enclosure       if($tagname == "enclosure" && $attrs) {         $this->startelement($parser, "enclosure");         foreach($attrs $attr => $attrval) {           $this->startelement($parser, $attr);           $this->parsedata($parser, $attrval);           $this->endelement($parser, $attr);         }         $this->endelement($parser, "enclosure");       }        // yahoo! media rss - images       if($tagname == "media:content" && $attrs['url'] && $attrs['medium'] == 'image') {         $this->startelement($parser, "image");         $this->parsedata($parser, $attrs['url']);         $this->endelement($parser, "image");       }        // check if element can contain others - list may edited       if(preg_match("/^(rdf|rss|channel|image|item)/", $tagname)) {         if($this->tags) {           $depth = count($this->tags);           if(is_array($tmp = end($this->tags))) {             list($parent, $num) = each($tmp);             if($parent) $this->tags[$depth-1][$parent][$tagname]++;           }         }         array_push($this->tags, array($tagname => array()));       } else {         if(!preg_match("/^(a|b|i)$/", $tagname)) {           // add tag tags array           array_push($this->tags, $tagname);         }       }     }      function endelement($parser, $tagname)     {       if(!preg_match("/^(a|b|i)$/", $tagname)) {         // remove tag tags array         array_pop($this->tags);       }     }      function parsedata($parser, $data)     {       // return if data contains no text       if(!trim($data)) return;        $evalcode = "\$this->output";       foreach($this->tags $tag) {         if(is_array($tag)) {           list($tagname, $indexes) = each($tag);           $evalcode .= "[\"$tagname\"]";           if(${$tagname}) $evalcode .= "[" . (${$tagname} - 1) . "]";           if($indexes) extract($indexes);         } else {           if(preg_match("/^([a-z]+):([a-z]+)$/", $tag, $matches)) {             $evalcode .= "[\"$matches[1]\"][\"$matches[2]\"]";           } else {             $evalcode .= "[\"$tag\"]";           }         }       }       eval("$evalcode = $evalcode . '" . addslashes($data) . "';");     }      // display single channel html     function display_channel($data, $limit)     {       extract($data);       if(@$image) {         // display channel image(s)         foreach($image $image) $this->display_image($image);       }       if(@$title) {         // display channel information         $this->retval .= "<h1>";         if($link) $this->retval .= "<a href=\"$link\" target=\"_blank\">";         $this->retval .= stripslashes($title);         if($link) $this->retval .= "</a>";         $this->retval .= "</h1>\n";         if($description) $this->retval .= "<p>$description</p>\n\n";         $tmp = array();         if(@$pubdate) $tmp[] = "<small>published: $pubdate</small>";         if(@$copyright) $tmp[] = "<small>copyright: @$copyright</small>";         if($tmp) $this->retval .= "<p>" . implode("<br>\n", $tmp) . "</p>\n\n";         $this->retval .= "<div class=\"divider\"><!-- --></div>\n\n";       }       if($item) {         // display channel item(s)         foreach($item $item) {           $this->display_item($item, "channel");           if(is_int($limit) && --$limit <= 0) break;         }       }     }      // display single image html     function display_image($data, $parent="")     {       extract($data);       if(!$url) return;        $this->retval .= "<p>";       if($link) $this->retval .= "<a href=\"$link\" target=\"_blank\">";       $this->retval .= "<img src=\"$url\"";       if(@$width && $height) $this->retval .= " width=\"$width\" height=\"$height\"";       $this->retval .= " border=\"0\" alt=\"$title\">";       if($link) $this->retval .= "</a>";       $this->retval .= "</p>\n\n";     }      // display single item html     function display_item($data, $parent)     {       extract($data);       //print_r($data);       //exit;        if(!$title) return;        $this->retval .=  "<p><b>";       if($link) $this->retval .=  "<a href=\"$link\" target=\"_blank\">";       $this->retval .= stripslashes($title);       if($link) $this->retval .= "</a>";       $this->retval .=  "</b>";       if(!$pubdate && $dc["date"]) $pubdate = $dc["date"];       if($pubdate) $this->retval .= " <small>($pubdate)</small>";       $this->retval .=  "</p>\n";        // use feed-formatted html if provided       if(@$content['encoded']) {         $this->retval .= "<p>" . stripslashes(@$content['encoded']) . "</p>\n";       } elseif($description) {         if(@$image) {           foreach($image $img) $this->retval .= "<img src=\"$img\">\n";         }         $this->retval .=  "<p>" . stripslashes($description) . "</p>\n\n";       }        // rss 2.0 - enclosure       if(@$enclosure) {         $this->retval .= "<p><small><b>media:</b> <a href=\"{$enclosure['url']}\">";         @$this->retval .= $enclosure['type'];         @$this->retval .= "</a> ({$enclosure['length']} bytes)</small></p>\n\n";       }        if(@$comments) {         $this->retval .= "<p style=\"text-align: right;\"><small>";         $this->retval .= "<a href=\"$comments\">comments</a>";         $this->retval .= "</small></p>\n\n";       }     }      function fixencoding(&$input, $key, $output_encoding)     {       if(!function_exists('mb_detect_encoding')) return $input;        $encoding = mb_detect_encoding($input);       switch($encoding)       {         case 'ascii':         case $output_encoding:           break;         case '':           $input = mb_convert_encoding($input, $output_encoding);           break;         default:           $input = mb_convert_encoding($input, $output_encoding, $encoding);       }     }      // display entire feed html     function getoutput($limit=false, $output_encoding='utf-8')     {       $this->retval = "";       $start_tag = key($this->output);        switch($start_tag)       {         case "rss":           // new format - channel contains           foreach($this->output[$start_tag]["channel"] $channel) {             $this->display_channel($channel, $limit);           }           break;          case "rdf:rdf":           // old format - channel , items separate           if(isset($this->output[$start_tag]['image'])) {             foreach($this->output[$start_tag]['image'] $image) {               $this->display_image($image);             }           }           foreach($this->output[$start_tag]['channel'] $channel) {             $this->display_channel($channel, $limit);           }           foreach($this->output[$start_tag]['item'] $item) {             $this->display_item($item, $start_tag);           }           break;          case "html":           die("error: cannot parse html document rss");          default:           die("error: unrecognized start tag '$start_tag' in getoutput()");       }        if($this->retval && is_array($this->retval)) {         array_walk_recursive($this->retval, 'myrssparser::fixencoding', $output_encoding);       }       //return $this->retval;       //echo $this->output[$start_tag]['image'];       return $this->output[$start_tag]["channel"];     }      // return raw data array     function getrawoutput($output_encoding='utf-8')     {       array_walk_recursive($this->output, 'myrssparser::fixencoding', $output_encoding);       return $this->output;     }   } ?>