gistfile1.php

		public function grab(&$param_pool=NULL){
			// I am not able to access $param_pool, so I'm taking a detour via Frontend::Page()
			$page = Frontend::Page();
			
			// CREATE XML DOCUMENT
			$doc = new DOMDocument;
			$root =	$doc->createElement($this->dsParamROOTELEMENT);
			$doc->appendChild($root);
			
			// APPEND ARTICLES
			$articles = SymRead('articles')
				->get('title')
				->get('body')
				->get('date')
				->orderby('date','desc')
				->perPage($this->dsParamLIMIT)
				->readDomDocument('articles');
				
			$xpath = new DOMXpath($articles);
			foreach($xpath->query('//entry') as $node) {
				$node->setAttribute('section','articles');
				$root->appendChild(
					$doc->importNode($node, true)
				);
			}
			
			// APPEND FACEBOOK
			$facebook = SymRead('facebook')
				->get('title')
				->get('body')
				->get('date')
				->orderby('date','desc')
				->perPage($this->dsParamLIMIT)
				->readDomDocument('facebook');
				
			$xpath = new DOMXpath($facebook);
			foreach($xpath->query('//entry') as $node) {
				$node->setAttribute('section','facebook');
				$root->appendChild(
					$doc->importNode($node, true)
				);
			}
			
			// APPEND TWITTER
			$twitter = SymRead('twitter')
				->get('body')
				->get('link')
				->get('date')
				->orderby('date','desc')
				->perPage($this->dsParamLIMIT)
				->readDomDocument('twitter');
				
			$xpath = new DOMXpath($twitter);
			foreach($xpath->query('//entry') as $node) {
				$node->setAttribute('section','twitter');
				$root->appendChild(
					$doc->importNode($node, true)
				);
			}
			
			// SORT XML BY USING ARRAYS
			$xpath = new DOMXPath($doc);
			$entries = array();

			foreach($xpath->query('//entry') as $node) {
				$entries[] = array(
					'node' => $node,
					'date' => $xpath->evaluate('translate(concat(date, " ", date/@time),"- :","")', $node)
				);

				$node->parentNode->removeChild($node);
			}
			usort($entries, array($this, 'cmp'));
			
			// ENTRIES SPLIT INTO OBJECTS, DELETE AND RECREATE XML
			unset($doc);
			unset($root);
			unset($xpath);
			
			$doc = new DOMDocument;
			$doc->formatOutput = true;
			$root =	$doc->createElement($this->dsParamROOTELEMENT);
			$doc->appendChild($root);
			
			foreach($entries as $index => $entry) {
				if($index > $this->dsParamLIMIT) break;

				$root->appendChild(
					$doc->importNode($entry['node'], true)
				);
			}
			
			// PASS ON THE XML
			return $doc->saveXML($doc->documentElement);
		}
		
		function cmp($a, $b) {
			$a = $a['date'];
			$b = $b['date'];
			
			if($this->dsParamORDER == 'desc')
				$coeff = -1;
			else
				$coeff = 1;
			
			if($a == $b)
				return 0;
			elseif($a > $b)
				return 1*$coeff;
			else
				return -1*$coeff;
		}