Fetch a themeimage by urlsegment for PyroCMS

image.php

<?php 

/**
 *
 * Plugin to fetch a themeimage by urlsegment 
 * 
 * usage: {{image:get by="url" default="default" img-type="png"}}
 * 
 * Attributes: 
 *  - (optional) "by" - default: "url"
 *  - (optional) "default" - default: "default"
 *  - (optional) "img-type" - default: "png"
 *
 * @author      Mirko Düßeldorf
 * @link	http://derduesseldorf.de
 * @package 	PyroCMS
 * @category	Content
 * @version 	1.0
 */

class Plugin_Image extends Plugin {
	
		
	public function get() {
		
		$by = $this->attribute('by', 'url');
		$default = $this->attribute('default', 'default'); 
		$imageType = $this->attribute('img-type', 'png'); 
				
		$uri = $this->uri->segment(1);
		$image = FCPATH.$this->template->get_theme_path().'img/'.$uri.'.'.$imageType;
		$defaultImage = $default.'.'.$imageType;
		
		if(file_exists($image)) {
			return '{{theme:image file="'.$image.'"}}'; 
		}		 
		
		return '{{theme:image file="'.$defaultImage.'"}}';
		
	}
	
}