元素的顺序输出

Question

我为我写了这个 RSS reader，它实际上工作得很好，但不幸的是我不明白 PHP 如何排序输出。有人可以帮我吗？

我的PHP代码：

$reader = new XMLReader();

$reader->open("articles.xml");

while ($reader->read())
{
  if ($reader->nodeType == XMLReader::ELEMENT && $reader->name == "title")
    echo "<h1>Pøehled aktuálních zpráv ze serveru
      <a href='" . htmlspecialchars($reader->readString(), ENT_QUOTES) . "'>" .
      $title . "</a></h1>";

  // obsluha názvu kanálu
  if ($reader->nodeType == XMLReader::ELEMENT && $reader->name == "link")
    $title = htmlspecialchars($reader->readString());

  if ($reader->nodeType == XMLReader::ELEMENT && $reader->name == "article")
  {
    echo "<dl>";
    while ($reader->read())
    {

      if ($reader->nodeType == XMLReader::ELEMENT && $reader->name == "link")
                echo "<dt><a href='" . htmlspecialchars($reader->readString(), ENT_QUOTES) . "'>" .
                    $title . "</a></dt>";

      if ($reader->nodeType == XMLReader::ELEMENT && $reader->name == "title")
                $title = htmlspecialchars($reader->readString());

      if ($reader->nodeType == XMLReader::ELEMENT && $reader->name == "description")
                echo "<dd>" .  htmlspecialchars($reader->readString()) . "</dd>";

    }

    echo "</dl>";
  }
}

这个的输出是 1. 它用 desc 显示那部分，紧接着它显示作为 link 工作的标题。但应该是相反的顺序。

这可能真的很愚蠢，但我看这段代码太久了，找不到问题所在。

如果有人能帮助我，我将非常高兴。谢谢

Answer 1

锚标签 <a> 的回显语句是错误的。我将 $title 替换为 htmlspecialchars($reader->readString(), ENT_QUOTES)。

这应该是你想要的：

$reader = new XMLReader();
$reader->open("http://blog.omer.london/feed/");

$title = '';
while ($reader->read()) {
    if ($reader->nodeType == XMLReader::ELEMENT && $reader->name == "title") {
        echo "<h1>Pøehled aktuálních zpráv ze serveru
      <a href='" . $title . "'>" . htmlspecialchars($reader->readString(), ENT_QUOTES) . "</a></h1>";
    }

    // obsluha názvu kanálu
    if ($reader->nodeType == XMLReader::ELEMENT && $reader->name == "link") {
        $title = htmlspecialchars($reader->readString());
    } elseif ($reader->nodeType == XMLReader::ELEMENT && $reader->name == "article") {
        echo "<dl>";
        while ($reader->read()) {
            if ($reader->nodeType == XMLReader::ELEMENT && $reader->name == "link") {
                echo "<dt><a href='" . $title . "'>" . htmlspecialchars($reader->readString(), ENT_QUOTES) . "</a></dt>";
            } elseif ($reader->nodeType == XMLReader::ELEMENT && $reader->name == "title") {
                $title = htmlspecialchars($reader->readString());
            } elseif ($reader->nodeType == XMLReader::ELEMENT && $reader->name == "description") {
                echo "<dd>" . htmlspecialchars($reader->readString()) . "</dd>";
            }
        }
        echo "</dl>";
    }
}

这是 HTML 输出：http://jsfiddle.net/0qt773eb/

元素的顺序输出

Order output of elements

php

xml

rss