Using a class in a class - php

Question

I'm currently receiving this error
Parse error: syntax error, unexpected T_OBJECT_OPERATOR
Please Note:
I'm new to php.
All I have basically done is merge
http://phpir.com/part-of-speech-tagging and
http://tappetyclick.com/blog/2013/06/25/twitter-xml-feeds-are-back
any help would be greatly appreciated.
my overall goal is to be able to collect all twitter search results and classify each word by its world class (part of speech)
anyway here is my code:
<?
//WORDCLASS
class PosTagger {
private $dict;
public function __construct($lexicon) {
$fh = fopen($lexicon, 'r');
while($line = fgets($fh)) {
$tags = explode(' ', $line);
$this->dict[strtolower(array_shift($tags))] = $tags;
}
fclose($fh);
}
public function tag($text) {
preg_match_all("/[\w\d\.]+/", $text, $matches);
$nouns = array('NN', 'NNS');
$return = array();
$i = 0;
foreach($matches[0] as $token) {
// default to a common noun
$return[$i] = array('token' => $token, 'tag' => 'NN');
// remove trailing full stops
if(substr($token, -1) == '.') {
$token = preg_replace('/\.+$/', '', $token);
}
// get from dict if set
if(isset($this->dict[strtolower($token)])) {
$return[$i]['tag'] = $this->dict[strtolower($token)][0];
}
// Converts verbs after 'the' to nouns
if($i > 0) {
if($return[$i - 1]['tag'] == 'DT' &&
in_array($return[$i]['tag'],
array('VBD', 'VBP', 'VB'))) {
$return[$i]['tag'] = 'NN';
}
}
// Convert noun to number if . appears
if($return[$i]['tag'][0] == 'N' && strpos($token, '.') !== false) {
$return[$i]['tag'] = 'CD';
}
// Convert noun to past particile if ends with 'ed'
if($return[$i]['tag'][0] == 'N' && substr($token, -2) == 'ed') {
$return[$i]['tag'] = 'VBN';
}
// Anything that ends 'ly' is an adverb
if(substr($token, -2) == 'ly') {
$return[$i]['tag'] = 'RB';
}
// Common noun to adjective if it ends with al
if(in_array($return[$i]['tag'], $nouns)
&& substr($token, -2) == 'al') {
$return[$i]['tag'] = 'JJ';
}
// Noun to verb if the word before is 'would'
if($i > 0) {
if($return[$i]['tag'] == 'NN'
&& strtolower($return[$i-1]['token']) == 'would') {
$return[$i]['tag'] = 'VB';
}
}
// Convert noun to plural if it ends with an s
if($return[$i]['tag'] == 'NN' && substr($token, -1) == 's') {
$return[$i]['tag'] = 'NNS';
}
// Convert common noun to gerund
if(in_array($return[$i]['tag'], $nouns)
&& substr($token, -3) == 'ing') {
$return[$i]['tag'] = 'VBG';
}
// If we get noun noun, and the second can be a verb, convert to verb
if($i > 0) {
if(in_array($return[$i]['tag'], $nouns)
&& in_array($return[$i-1]['tag'], $nouns)
&& isset($this->dict[strtolower($token)])) {
if(in_array('VBN', $this->dict[strtolower($token)])) {
$return[$i]['tag'] = 'VBN';
} else if(in_array('VBZ',
$this->dict[strtolower($token)])) {
$return[$i]['tag'] = 'VBZ';
}
}
}
$i++;
}
return $return;
}
}
?>
<?php
//TWITTER
// Include the twitter oauth library for PHP (I put it in a subdirectory
require_once("lib/twitteroauth/twitteroauth.php");
// Init
define("CONSUMER_KEY", "mykeyhere");
define("CONSUMER_SECRET", "mykeyhere");
define("OAUTH_TOKEN", "mykeyhere");
define("OAUTH_TOKEN_SECRET", "mykeyhere");
$q='search term';
// Get an authorised connection to twitter
$connection = new TwitterOAuth(CONSUMER_KEY, CONSUMER_SECRET, OAUTH_TOKEN, OAUTH_TOKEN_SECRET);
$content = $connection->get("search/tweets.json?q=".$q."&result_type=recent");
// Send the xml header
header("Content-Type: application/rss+xml; charset=ISO-8859-1");
$url = 'http://'.$_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"];
$xml ="";
$xml.= '<!--?xml version="1.0" encoding="ISO-8859-1"?-->'.PHP_EOL;
$xml.= '<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">'.PHP_EOL;
$xml.= ' <channel>'.PHP_EOL;
$xml.= '<title>'.$q.'</title>'.PHP_EOL;
$xml.= ' <description>Search results</description>'.PHP_EOL;
$xml.= '<link>'.$url.'</link>'.PHP_EOL;
$xml.= ' <atom:link href="'.$url.'" rel="self" type="application/rss+xml">'.PHP_EOL;
// Get the status
foreach ($content->statuses as $status) {
//wordclass
$statustext = $status->text;
$tagger = new PosTagger('lexicon.txt');
$tags = $tagger->tag($statustext);
// Build the tweet url as we don't get this in the status object
$url = 'http://twitter.com/'.$status->user->screen_name.'/status/'.$status->id_str;
$date = explode(' ', $status->created_at);
$xml.= ' <item>'.PHP_EOL;
$xml.= '<title>'.$status->text.'</title>'.PHP_EOL;
$xml.= ' <description>'.$tags->text.'</description>'.PHP_EOL;
$xml.= '<link>'.$url.'</link>'.PHP_EOL;
$xml.= ' <guid ispermalink="true">'.$url.'</guid>'.PHP_EOL;
// Format the date since the twitter format doesn't work for rss
$xml.= ' <pubdate>'.$date[0].', '.$date[2].' '.$date[1].' '.$date[5].' '.$date[3].' '.$date[4].'</pubdate>'.PHP_EOL;
// Get the attached media
/*
if ($status->entities) {
if (is_array($status->entities->media)) {
foreach ($status->entities->media as $media) {
switch ($media->type) {
//Currently only photo's supported but I suspected with vine video will be along soon
case 'photo':
$enc_type = 'image/jpeg';
break;
}
if (!empty($enc_type)) {
// We need the file size for the media so try to get this from the headers
$headers = get_headers($media->media_url);
$size = $headers['Content-Length'];
if (empty($size)) {
foreach ($headers as $header) {
$h = explode(':', $header);
if ($h[0] == 'Content-Length') {
$size = trim($h[1]);
break; // Found what we need, stop looping
}
}
}
if (empty($size)) {
$size = 1; //This is basically a hack to make the rss validate
}
$xml.= ' <enclosure length="'.$size.'" type="'.$enc_type.'" url="'.$media->media_url.'">'.PHP_EOL;
}
}
}
}
$xml.= ' </enclosure></item>'.PHP_EOL;*/
$xml.= ' </item>'.PHP_EOL;
}
$xml.= ' </atom:link></channel>'.PHP_EOL;
$xml.= '</rss>'.PHP_EOL;
// Return the xml for the rss
print $xml;
?>
the above code returns the following error
Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /var/www/test/Twitter/index.php
for this line
$tags = new PosTagger('lexicon.txt')->tag($status->text);