rss-bridge/bridges/ForGifsBridge.php

<?php
class ForGifsBridge extends FeedExpander {

	const MAINTAINER = 'logmanoriginal';
	const NAME = 'forgifs Bridge';
	const URI = 'https://forgifs.com';
	const DESCRIPTION = 'Returns the forgifs feed with actual gifs instead of images';

	public function collectData() {
		$this->collectExpandableDatas('https://forgifs.com/gallery/srss/7');
	}

	protected function parseItem($feedItem) {

		$item = parent::parseItem($feedItem);

		$content = str_get_html($item['content']);
		$img = $content->find('img', 0);
		$poster = $img->src;

		// The actual gif is the same path but its id must be decremented by one.
		// Example:
		// http://forgifs.com/gallery/d/279419-2/Reporter-videobombed-shoulder-checks.gif
		// http://forgifs.com/gallery/d/279418-2/Reporter-videobombed-shoulder-checks.gif
		// Notice how this changes ----------^
		// Now let's extract that number and do some math
		// Notice: Technically we could also load the content page but that would
		// require unnecessary traffic. As long as it works...
		$num = substr($img->src, 29, 6);
		$num -= 1;
		$img->src = substr_replace($img->src, $num, 29, strlen($num));
		$img->width = 'auto';
		$img->height = 'auto';

		$item['content'] = $content;

		return $item;

	}
}