我想修改RSS提要。我想从Feed中删除X项,然后以XML格式返回新的Feed。
<?php
class RSS {
private $simpleXML;
public function __construct($address) {
$xml = file_get_contents($address);
$this->simpleXML = simplexml_load_string($xml);
}
private function getRssInformation() {
// Here I want to get the Rss Head information ...
}
// Here I get X items ...
private function getItems($itemsNumber, $UTF8) {
$xml = null;
$items = $this->simpleXML->xpath('/rss/channel/item');
if(count($items) > $itemsNumber) {
$items = array_slice($items, 0, $itemsNumber, true);
}
foreach($items as $item) {
$xml .= $item->asXML() . "\n";
}
return $xml;
}
public function getFeed($itemsNumber = 5, $UTF8 = true) {
// Here i will join rss information with X items ...
echo $this->getItems($itemsNumber, $UTF8);
}
}
?>
XPath有可能吗? 谢谢。
答案 0 :(得分:0)
另一种方法(但可能更清洁):
private function getItems($itemsNumber, $UTF8) {
$xml = '<?xml version="1.0" ?>
<rss version="2.0">
<channel>';
$i = 0;
if (count($this->simpleXML->rss->channel->item)>0){
foreach ($this->simpleXML->rss->channel->item as $item) {
$xml .= str_replace('<?xml version="1.0" ?>', '', $item->asXML());
$i++;
if($i==$itemsNumber) break;
}
}
$xml .=' </channel></rss> ';
return $xml;
}
但我认为asXML();添加XML声明:
<?xml version="1.0" ?>
我编辑了我的代码。它很脏但它应该工作。还有更好的主意吗?