php - PHP 解析文本和描述 SimpleXML

Question

我正在尝试从提供的代码中解析文本和描述字段：

<?
$news = simplexml_load_file('http://en.wikipedia.org/w/api.php?action=opensearch&search=mandarin%20comics&format=xml&limit=1');

foreach($news->section->item as $item) {
    echo "<strong>" . $item->text . "</strong><br />";
    echo strip_tags($item->description) ."<br /><br />";
}
?>

它给了我这个错误：

Invalid argument supplied for foreach() on line 4

我怎样才能解决这个问题？

var_dump：

object(SimpleXMLElement)#1 (3) { ["@attributes"]=> array(1) { ["version"]=> string(3) "2.0" } ["Query"]=> string(15) "mandarin comics" ["Section"]=> object(SimpleXMLElement)#3 (1) { ["Item"]=> object(SimpleXMLElement)#2 (3) { ["Text"]=> string(17) "Mandarin (comics)" ["Description"]=> string(109) "The Mandarin is a fictional character, a supervillain who appears in comic books published by Marvel Comics. " ["Url"]=> string(46) "http://en.wikipedia.org/wiki/Mandarin_(comics)" } } }

这是 xml 页面的链接：http ://en.wikipedia.org/w/api.php?action=opensearch&search=mandarin%20comics&format=xml&limit=1

Answer 1

XML 区分大小写，因此：

foreach($news->Section->Item as $item) {
    echo "<strong>" . $item->Text . "</strong><br />";
    echo strip_tags($item->Description) ."<br /><br />";
}

Answer 2

如果要迭代数组项$news->section（假设该部分是数组），则应更正代码：

<?
$news = simplexml_load_file('http://en.wikipedia.org/w/api.php?action=opensearch&search=mandarin%20comics&format=xml&limit=1');

foreach($news->Section as $section) {
    echo "<strong>" . $section->Item->Text . "</strong><br />";
    echo strip_tags($section->Item->Description) ."<br /><br />";
}
?>