Question

我有以下输出（通过链接），它显示了一些XML im生成的var_dump：

在页面的最底部，您将看到由此代码生成的一些输出：

foreach ($xml->feed as $entry) {
          $title = $entry->title;
          $title2 = $entry->entry->title;
        }
echo $title;
echo $title2;

由于某种原因，$ title2只输出一次，其中有多个条目？

我使用$xml = simplexml_load_string($data);创建xml。

Answer 1

在foreach循环的每次迭代中，您为$ title和$ tile2重新赋值。循环结束后，只能访问最后指定的值可能的替代方案：

// print/use the values within the loop-body
foreach ($xml->feed as $entry) {
  $title = $entry->title;
  $title2 = $entry->entry->title;
  echo $title, ' ', $title2, "\n";
}

// append the values in each iteration to a string
$title = $title2 = '';
foreach ($xml->feed as $entry) {
  $title .= $entry->title . ' ';
  $title2 .= $entry->entry->title . ' ';
}
echo $title, ' ', $title2, "\n";

// append the values in each iteration to an array
$title = $title2 = array();
foreach ($xml->feed as $entry) {
  $title[] = $entry->title;
  $title2[] = $entry->entry->title;
}
var_dump($title, $title2);

需要有关foreach和XML的帮助

1 个答案: