# Array2feed 
# @author: bronco@warriordudimanche.net
# @version 0.1
# @license  free and opensource
# @inspired by  http://milletmaxime.net/syndexport/
# @use: $items=feed2array('http://sebsauvage.net/links/index.php?do=rss');
# @doc:
	# the array must have an index 'infos' and another called 'items'
	#info key
		# for rss type feed, infos must have at least the 'title', 'description', 'guid' keys
		# for atom type feed, infos must have at least the 'title', 'id', 'subtitle', 'link' keys
	# items key => array
		# for rss type feed, each item must have the 'title', 'description', 'pubDate' and 'link' keys
		# for atom type feed, info must have the 'title', 'id', 'updated, 'link' & 'content' keys 

function array2feed($array=null){


	if (!$array){return false;}
	if (empty($array['infos']['type'])){$array['infos']['type']='rss';}else{$array['infos']['type']=strtolower($array['infos']['type']);}
	if (empty($array['infos']['description'])){$array['infos']['description']='';}
	$r="n";$t="t";
	$tpl=array('rss'=>array(),'atom'=>array());
	$tpl['rss']['header']=''.$r.''.$r.$t.''.$r;
	$tpl['atom']['header']=''.$r;
	$tpl['rss']['footer']=$t.''.$r;
	$tpl['atom']['footer']=''.$r;
	$tpl['rss']['content-type']='Content-Type: application/rss+xml';
	$tpl['atom']['content-type']='Content-Type: application/atom+xml;charset=utf-8';

	header($tpl[$array['infos']['type']]['content-type']);
	$feed=$tpl[$array['infos']['type']]['header'];
		//create the feed's info content
		foreach($array['infos'] as $key=>$value){
			if ($array['infos']['type']=='atom'){ // ATOM
				if ($key=='link'){$feed.=$t.$t.''.$r;}
				elseif ($key=='author'){$feed.=$t.$t.''.$value.''.$r;}
				elseif ($key=='licence'){$feed.=$t.$t.'<'.$key.' href="'.$value.'" rel="license"/>'.$r;} // in atom feed, licence is the link to the licence type
				elseif ($key!='version'&&$key!='type'){$feed.=$t.$t.'<'.$key.'>'.$value.''.$r;}
			}else{ // RSS
				if ($key!='version'&&$key!='type'){$feed.=$t.$t.'<'.$key.'>'.$value.''.$r;}
			}
		}

		//then the items content
		foreach ($array['items'] as $item){
			if ($array['infos']['type']=='atom'){ $feed.=$t.$t.$t.''.$r;}else{$feed.=$t.$t.$t.''.$r;}
				foreach($item as $key=>$value){
					if ($array['infos']['type']=='atom'){ // ATOM
						if ($key=='link'){$feed.=$t.$t.$t.$t.''.$r;}
						elseif ($key=='content'){$feed.=$t.$t.$t.$t.''.htmlspecialchars($value).''.$r;}
						else{$feed.=$t.$t.$t.$t.'<'.$key.'>'.$value.''.$r;}
					}else{ // RSS
						if ($key=='date'||$key=='pubDate'||$key=='title'||$key=='link'){$feed.=$t.$t.$t.$t.'<'.$key.'>'.htmlspecialchars($value).''.$r;}
						elseif($key=='guid'){ $feed.=$t.$t.$t.$t.''.$value.''.$r;}
						else{$feed.=$t.$t.$t.$t.'<'.$key.'>'.$r;}
					}
				}
			if ($array['infos']['type']=='atom'){ $feed.=$t.$t.$t.''.$r;}else{$feed.=$t.$t.$t.''.$r;}
		}


	$feed.=$tpl[$array['infos']['type']]['footer'];
	return $feed;
}

$array=array(
	'infos'=>array(
			'type'=>'rss',
			'description'=>'Ceci est le test ultime de la mort',
			'title'=>'test de création de flux rss',
			'link'=>'http://www.warriordudimanche.net',
		),
	'items'=>array(
		0=>array(
				'description'=>'Ceci est le premier item du flux',
				'title'=>'item 1 : le titre',
				'link'=>'http://www.warriordudimanche.net',
				'guid'=>'http://www.warriordudimanche.net#1',
				'pubDate'=>@date('r'),// Be carefull, the rss pubDate format is specific ! RFC 2822 (see http://www.faqs.org/rfcs/rfc2822.html)
			),
		1=>array(
				'description'=>'Ceci est le second item du flux',
				'title'=>'item 2 : le retour',
				'link'=>'http://www.warriordudimanche.net',
				'guid'=>'http://www.warriordudimanche.net#2',
				'pubDate'=>@date('r'),
			),
		2=>array(
				'description'=>'Ceci est le troisième item du flux',
				'title'=>'item 3 : la revanche',
				'link'=>'http://www.warriordudimanche.net',
				'guid'=>'http://www.warriordudimanche.net#3',
				'pubDate'=>@date('r'),
			),

		)
	);



echo array2feed($array);