doushang9172 2011-03-24 15:16
浏览 58
已采纳

PHP XML XPATH节点元素迭代并插入到数组中

Ok, so I thought I had this nailed , but sadly not . I have this XML:

//XML
this is root--> <story> 
<article>
<title>my title </title>
<img>my image </img>
<link>my link </link
</article>
</story>

and then this PHP:

//php
$dom = new DOMDocument('1.0', 'UTF-8');
$dom->loadXML($_SESSION['xml']);
$xpath = new DOMXPath($dom);
$query = $xpath->query('//section/article');

foreach($query as $article  ):
                $currentTitle = $article->title ;
//edit - mistake in code - $article used for all 
                //$imagearray =  $currentimg->img ;
                //$linkarray =  $currentlink->link ;
                array_push( $availAds,$currentTitle,$imagearray,$linkarray );
        endforeach;

So what I'm trying to do is get the 'Title' 'Img' and 'Link' values and insert them into a pre existing array. The array already outputs fine with the previously entered values, but I then need to be able to output the results of the updated array in this way:

    printf(
                    '<input name="ads[%1$s][title]" value="%2$s" style="width:310px;" /><br />',
                    $availAd['image'],
                    $availAd['title']
                );

The issue is right now , the foreach returns NULL for $currentTitle , $imagearray and $linkarray

  • 写回答

2条回答 默认 最新

  • duanduo3712 2011-03-24 16:21
    关注

    As Gordon said: you need simplexml instead of domdocument/domxpath if you want to access child elements like $parent->childelements.
    And you probably want to "group" the elements you put into the array for each article element, i.e. instead of
    array_push($arr, $x, $y, $z);
    you probably want
    array_push($arr, array($x, $y, $z));

    self-contained example:

    <?php
    $doc = getDoc();
    $arr = foo($doc);
    foreach($arr as $ad) {
      echo $ad['title'], " ", $ad['img'], "
    ";
    }
    
    function foo(SimpleXMLElement $doc) {
      $availAds = array();
      $query = '//section/article';
      foreach( $doc->xpath($query) as $article ) {
        $currentTitle = $article->title ;
      //edit - mistake in code - $article used for all 
                      //$imagearray =  $currentimg->img ;
                      //$linkarray =  $currentlink->link ;
        array_push( $availAds, array(
          'title'=>(string)$article->title, // without the (string) cast 
          'img'=>(string)$article->img,  // you'd store simplexmlelement instances
          'link'=>(string)$article->link  // which _might or might not_ be what you want
        ));
      }
      return $availAds;
    }
    
    function getDoc() {
      return new SimpleXMLElement( <<< eoxml
    <story>
      <section>
        <article>
          <title>title 1.1</title>
          <img>my image 1.1</img>
          <link>my link 1.1</link>
        </article>
        <article>
          <title>title 1.2</title>
          <img>my image 1.2</img>
          <link>my link 1.2</link>
        </article>
      </section>
      <section>
        <article>
          <title>title 2.1</title>
          <img>my image 2.1</img>
          <link>my link 2.1</link>
        </article>
      </section>
    </story>
    eoxml
      );
    }
    

    prints

    title 1.1 my image 1.1
    title 1.2 my image 1.2
    title 2.1 my image 2.1
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
查看更多回答(1条)

报告相同问题?

悬赏问题

  • ¥30 帮我写一段可以读取LD2450数据并计算距离的Arduino代码
  • ¥15 C#调用python代码(python带有库)
  • ¥15 矩阵加法的规则是两个矩阵中对应位置的数的绝对值进行加和
  • ¥15 活动选择题。最多可以参加几个项目?
  • ¥15 飞机曲面部件如机翼,壁板等具体的孔位模型
  • ¥15 vs2019中数据导出问题
  • ¥20 云服务Linux系统TCP-MSS值修改?
  • ¥20 关于#单片机#的问题:项目:使用模拟iic与ov2640通讯环境:F407问题:读取的ID号总是0xff,自己调了调发现在读从机数据时,SDA线上并未有信号变化(语言-c语言)
  • ¥20 怎么在stm32门禁成品上增加查询记录功能
  • ¥15 Source insight编写代码后使用CCS5.2版本import之后,代码跳到注释行里面