您只需要注册命名空间，然后就可以正常使用simplexml_load_file和XPath
<?php$data = "http://alerts.weather.gov/cap/tx.php?x=1";$entries = file_get_contents($data);$entries = new SimpleXmlElement($entries);if(count($entries)): //echo "<pre>";print_r($entries);die; //alternate way other than registring NameSpace //$asin = $asins->xpath("//*[local-name() = 'ASIN']"); $entries->registerXPathNamespace('prefix', 'http://www.w3.org/2005/Atom'); $result = $entries->xpath("//prefix:entry"); //echo count($asin); //echo "<pre>";print_r($result);die; foreach ($result as $entry): //echo "<pre>";print_r($entry);die; $dc = $entry->children('urn:oasis:names:tc:emergency:cap:1.1'); echo $dc->event."<br/>"; echo $dc->effective."<br/>"; echo "<hr>"; endforeach;endif;而已。
