rss-bridge/bridges/FourchanBridge.php

<?php
class FourchanBridge extends BridgeAbstract{

	public function loadMetadatas() {

		$this->maintainer = "mitsukarenai";
		$this->name = "4chan";
		$this->uri = "https://www.4chan.org/";
		$this->description = "Returns posts from the specified thread";

        $this->parameters[] = array(
          't'=>array('name'=>'Thread URL')
        );
	}


  public function collectData(array $param){

	if (!isset($param['t']))
		$this->returnClientError('You must specify the thread URL (?t=...)');

	$thread = parse_url($param['t']) or $this->returnClientError('This URL seems malformed, please check it.');
	if($thread['host'] !== 'boards.4chan.org')
		$this->returnClientError('4chan thread URL only.');

	if(strpos($thread['path'], 'thread/') === FALSE)
		$this->returnClientError('You must specify the thread URL.');

	$url = 'https://boards.4chan.org'.$thread['path'].'';
	$html = $this->getSimpleHTMLDOM($url) or $this->returnServerError("Could not request 4chan, thread not found");

	foreach($html->find('div.postContainer') as $element) {
		$item = new \Item();
		$item->id = $element->find('.post', 0)->getAttribute('id');
		$item->uri = $url.'#'.$item->id;
		$item->timestamp = $element->find('span.dateTime', 0)->getAttribute('data-utc');
		$item->author = $element->find('span.name', 0)->plaintext;


		if(!empty($element->find('.file', 0) ) ) {
			$item->image = $element->find('.file a', 0)->href;
			$item->imageThumb = $element->find('.file img', 0)->src;
			if(empty($item->imageThumb) and strpos($item->image, '.swf') !== FALSE)
				$item->imageThumb = 'http://i.imgur.com/eO0cxf9.jpg';
		}
		if(!empty($element->find('span.subject', 0)->innertext )) {
			$item->subject = $element->find('span.subject', 0)->innertext;
		}
		$item->title = (!empty($item->subject) ? $item->subject.' - ' : '' ) . 'reply '.$item->id.' | '.$item->author;


		$item->content = (!empty($item->image) ? '<a href="'.$item->image.'"><img alt="'.$item->id.'" src="'.$item->imageThumb.'" /></a><br>' : '') . '<span id="'.$item->id.'">'.$element->find('.postMessage', 0)->innertext.'</span>';
		$this->items[] = $item;
	}
	$this->items = array_reverse($this->items);
  }

    public function getCacheDuration(){
        return 300; // 5min
    }
}