<?php
/*
 +--------------------------------------------------------------------------+
 | Author			: Ciprian Voicu  						 				|
 | Email			: pictoru at autoportret dot ro			 				|
 | URL				: http://www.autoportret.ro				 				|
 +--------------------------------------------------------------------------+
 | Name				: Pictoru's BNR Currency Parser							|
 | Filename			: PBNR.inc.php									 		|
 | Description		: Retrieve information about some important currencies  |
 |					  from the National Bank of Romania site.				|
 |					  The class return the information as an array with 	|
 |					  2 elements: date and currencies.						|
 |					  For PHP4 works with DOM XML class, and for PHP5 with 	|
 |					  DOM class.											|
 | Created Date     : 2008-02-11											|
 | Last Modified    : 2008-03-18                  							|
 | Version    		: 1.1		                  							|
 +--------------------------------------------------------------------------+
 | License 			: Free to use for anyone          						|
 +--------------------------------------------------------------------------+
 */
#
class PBNR{
	var $BNRString;
	var $BNRList;
	#
	function PBNR(){
		$this->BNRString=file_get_contents('http://www.bnro.ro/nbrfxrates.xml');
		$this->BNRList=$this->parse();
	}
	#
	function parse(){
		if(function_exists('domxml_open_mem')){
			return $this->withDOMXML();
		}else{
			return $this->withDOM();
		}
	}
	function get($what=NULL){
		if(empty($what))
			return $this->BNRList;
		else
			$what=strtolower($what);
		if($what=='date')
			return $this->BNRList['date'];
		else if(in_array($what,array_keys($this->BNRList['currencies'])))
			return $this->BNRList['currencies'][$what];
		else
			return $this->BNRList;
	}
	#
	function withDOMXML(){
		$xml=domxml_open_mem($this->BNRString);
		$root = $xml->document_element();
		#
		$data_el=$root->get_elements_by_tagname('Cube');
		$obj['date']=$data_el[0]->get_attribute('date');
		#
		$data_elements=$data_el[0]->get_elements_by_tagname('Rate');
		foreach($data_elements as $key=>$arr){
			$element=$data_elements[$key];
			$k=strtolower($element->get_attribute('currency'));
			$v=$element->child_nodes();
			$obj['currencies'][$k]=$v[0]->node_value();
			if($element->has_attribute('multiplier')){
				$m=$element->get_attribute('multiplier');
				$obj['currencies'][$k]=$v[0]->node_value()/$m;
			}
		}
		#
		return $obj;
	}
	#
	function withDOM(){
		if(ini_get('zend.ze1_compatibility_mode')){
			ini_set('zend.ze1_compatibility_mode','0');
			$ze1_compatibility_mode=true;
		}
		$xml=new DOMDocument();
		$xml->loadXML($this->BNRString);
		$data_el=$xml->getElementsByTagName('Cube');
		$obj['date']=$data_el->item(0)->getAttribute('date');
		#
		$data_elements=$xml->getElementsByTagName('Rate');
		foreach($data_elements as $item){
			$k=strtolower($item->getAttribute('currency'));
			$obj['currencies'][$k]=($item->hasAttribute('multiplier')?$item->nodeValue/$item->getAttribute('multiplier'):$item->nodeValue);
		}
		if($ze1_compatibility_mode)
			ini_set('zend.ze1_compatibility_mode','1');
		return $obj;
	}
}
?>