XPath 不适用于 XMLReader 和 SimpleXML？ [复制]

【问题标题】：XPath does not work with XMLReader and SimpleXML? [duplicate]XPath 不适用于 XMLReader 和 SimpleXML？ [复制]
【发布时间】：2015-06-21 08:13:19
【问题描述】：

我从一个 xml feeder 获得 feed，他的 XML 结构是这样的：

<XMLSOCCER.COM>
<OddsList>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Bet-At-Home</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:32.943</UpdatedDate>
  <Type>Over/Under 2.5</Type>
  <HomeOdds>2.22</HomeOdds>
  <AwayOdds>1.58</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Interwetten</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:33.113</UpdatedDate>
  <Type>Over/Under 2.5</Type>
  <HomeOdds>1.85</HomeOdds>
  <AwayOdds>1.75</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>188Bet</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:33.27</UpdatedDate>
  <Type>Over/Under 2.5</Type>
  <HomeOdds>2.11</HomeOdds>
  <AwayOdds>1.8</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Pinnacle</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:32.803</UpdatedDate>
  <Type>Over/Under 2.5</Type>
  <HomeOdds>2.33</HomeOdds>
  <AwayOdds>1.65</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Bet365</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:34.263</UpdatedDate>
  <Type>Handicap</Type>
  <HomeOdds>3.1</HomeOdds>
  <DrawOdds>3.5</DrawOdds>
  <AwayOdds>2</AwayOdds>
  <Handicap>-1</Handicap>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Bet-At-Home</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:34.373</UpdatedDate>
  <Type>Handicap</Type>
  <HomeOdds>1.17</HomeOdds>
  <DrawOdds>5.41</DrawOdds>
  <AwayOdds>10.32</AwayOdds>
  <Handicap>1</Handicap>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Mybet</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:34.5</UpdatedDate>
  <Type>Handicap</Type>
  <HomeOdds>3.35</HomeOdds>
  <DrawOdds>3.5</DrawOdds>
  <AwayOdds>1.85</AwayOdds>
  <Handicap>-1</Handicap>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Expekt</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:33.41</UpdatedDate>
  <Type>Double Chance</Type>
  <HomeOdds>1.15</HomeOdds>
  <DrawOdds>1.85</DrawOdds>
  <AwayOdds>1.3</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Bet-At-Home</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:33.787</UpdatedDate>
  <Type>Double Chance</Type>
  <HomeOdds>1.17</HomeOdds>
  <DrawOdds>1.8</DrawOdds>
  <AwayOdds>1.25</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Mybet</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:34.037</UpdatedDate>
  <Type>Double Chance</Type>
  <HomeOdds>1.15</HomeOdds>
  <DrawOdds>1.85</DrawOdds>
  <AwayOdds>1.25</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>BetClic</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:34.16</UpdatedDate>
  <Type>Double Chance</Type>
  <HomeOdds>1.15</HomeOdds>
  <DrawOdds>1.85</DrawOdds>
  <AwayOdds>1.3</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Unibet</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:33.52</UpdatedDate>
  <Type>Double Chance</Type>
  <HomeOdds>1.22</HomeOdds>
  <DrawOdds>1.84</DrawOdds>
  <AwayOdds>1.29</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>888</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:33.647</UpdatedDate>
  <Type>Double Chance</Type>
  <HomeOdds>1.22</HomeOdds>
  <DrawOdds>1.84</DrawOdds>
  <AwayOdds>1.29</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Pinnacle</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:34.733</UpdatedDate>
  <Type>Asian Handicap</Type>
  <HomeOdds>1.92</HomeOdds>
  <AwayOdds>2</AwayOdds>
  <Handicap>-0.5</Handicap>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>WilliamHill</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:34.623</UpdatedDate>
  <Type>Asian Handicap</Type>
  <HomeOdds>1.36</HomeOdds>
  <AwayOdds>3</AwayOdds>
  <Handicap>0</Handicap>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Betfred</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:34.86</UpdatedDate>
  <Type>Asian Handicap</Type>
  <HomeOdds>1.36</HomeOdds>
  <AwayOdds>3</AwayOdds>
  <Handicap>0</Handicap>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>188Bet</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:34.967</UpdatedDate>
  <Type>Asian Handicap</Type>
  <HomeOdds>1.89</HomeOdds>
  <AwayOdds>2.03</AwayOdds>
  <Handicap>-0.5</Handicap>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Doxxbet</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:31.63</UpdatedDate>
  <Type>1X2</Type>
  <HomeOdds>1.85</HomeOdds>
  <DrawOdds>3.3</DrawOdds>
  <AwayOdds>3.92</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>BetSafe</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:30.74</UpdatedDate>
  <Type>1X2</Type>
  <HomeOdds>1.84</HomeOdds>
  <DrawOdds>3.25</DrawOdds>
  <AwayOdds>4.25</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Pinnacle</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:30.257</UpdatedDate>
  <Type>1X2</Type>
  <HomeOdds>1.92</HomeOdds>
  <DrawOdds>3.4</DrawOdds>
  <AwayOdds>4.8</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>888</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:31.02</UpdatedDate>
  <Type>1X2</Type>
  <HomeOdds>1.9</HomeOdds>
  <DrawOdds>3.4</DrawOdds>
  <AwayOdds>4</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Skybet</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:32.177</UpdatedDate>
  <Type>1X2</Type>
  <HomeOdds>1.91</HomeOdds>
  <DrawOdds>3.4</DrawOdds>
  <AwayOdds>4</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>WilliamHill</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:29.91</UpdatedDate>
  <Type>1X2</Type>
  <HomeOdds>1.91</HomeOdds>
  <DrawOdds>3.3</DrawOdds>
  <AwayOdds>4.33</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Bet365</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:30.02</UpdatedDate>
  <Type>1X2</Type>
  <HomeOdds>1.83</HomeOdds>
  <DrawOdds>3.4</DrawOdds>
  <AwayOdds>4.5</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Expekt</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:30.13</UpdatedDate>
  <Type>1X2</Type>
  <HomeOdds>1.82</HomeOdds>
  <DrawOdds>3.1</DrawOdds>
  <AwayOdds>4.6</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Betfred</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:30.473</UpdatedDate>
  <Type>1X2</Type>
  <HomeOdds>1.83</HomeOdds>
  <DrawOdds>3.3</DrawOdds>
  <AwayOdds>4.33</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Bet-At-Home</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:31.13</UpdatedDate>
  <Type>1X2</Type>
  <HomeOdds>1.82</HomeOdds>
  <DrawOdds>3.18</DrawOdds>
  <AwayOdds>4.25</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Interwetten</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:31.397</UpdatedDate>
  <Type>1X2</Type>
  <HomeOdds>1.8</HomeOdds>
  <DrawOdds>3.4</DrawOdds>
  <AwayOdds>4</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>BWin</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:31.77</UpdatedDate>
  <Type>1X2</Type>
  <HomeOdds>1.85</HomeOdds>
  <DrawOdds>3.3</DrawOdds>
  <AwayOdds>3.9</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Mybet</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:31.943</UpdatedDate>
  <Type>1X2</Type>
  <HomeOdds>1.85</HomeOdds>
  <DrawOdds>3.3</DrawOdds>
  <AwayOdds>4</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>BetClic</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:32.067</UpdatedDate>
  <Type>1X2</Type>
  <HomeOdds>1.82</HomeOdds>
  <DrawOdds>3.1</DrawOdds>
  <AwayOdds>4.6</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>188Bet</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:32.27</UpdatedDate>
  <Type>1X2</Type>
  <HomeOdds>1.86</HomeOdds>
  <DrawOdds>3.15</DrawOdds>
  <AwayOdds>4.05</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>10Bet</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:32.473</UpdatedDate>
  <Type>1X2</Type>
  <HomeOdds>1.83</HomeOdds>
  <DrawOdds>3.2</DrawOdds>
  <AwayOdds>4.4</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Sportingbet</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:32.707</UpdatedDate>
  <Type>1X2</Type>
  <HomeOdds>1.83</HomeOdds>
  <DrawOdds>3.25</DrawOdds>
  <AwayOdds>4.33</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>NordicBet</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:30.63</UpdatedDate>
  <Type>1X2</Type>
  <HomeOdds>1.84</HomeOdds>
  <DrawOdds>3.25</DrawOdds>
  <AwayOdds>4.25</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Ladbrokes</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:30.85</UpdatedDate>
  <Type>1X2</Type>
  <HomeOdds>1.85</HomeOdds>
  <DrawOdds>3.1</DrawOdds>
  <AwayOdds>4.25</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>Unibet</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:30.38</UpdatedDate>
  <Type>1X2</Type>
  <HomeOdds>1.9</HomeOdds>
  <DrawOdds>3.4</DrawOdds>
  <AwayOdds>4</AwayOdds>
</Odds>
<Odds>
  <FixtureMatch_Id>346076</FixtureMatch_Id>
  <Bookmaker>5Dimes</Bookmaker>
  <UpdatedDate>2015-06-20T19:42:31.507</UpdatedDate>
  <Type>1X2</Type>
  <HomeOdds>1.92</HomeOdds>
  <DrawOdds>3.4</DrawOdds>
  <AwayOdds>4.8</AwayOdds>
</Odds>
</OddsList>

我尝试使用此代码获取所有 Bookmaker = Interwetten 的位置：

$url = $this->buildUrl($name,$params);   
    $xml = '';

    $reader = new XMLReader();
    $reader->open($url);

    $dom = new DomDocument();
    $pathXML = array();
    while($reader->read() && $reader->nodeType == XMLREADER::ELEMENT && $reader->name == 'XMLSOCCER.COM'){
        $xml = simplexml_import_dom($dom->importNode($reader->expand(),true));

        $pathXML = $xml->xpath('//Odds[contains(Bookmaker,"Interwetten")]');


        /*if($this->getExpression()){
            $xml->xpath($this->getExpression());
        }*/
    }
    //$pls = $xml->xpath('/OddsList/Odds/Bookmaker');

    var_dump($pathXML);

但是 var_dump 让我恢复

数组 (size=0) 空数组 (size=0) 空数组 (size=0) 空 数组 (size=0) 空

我需要使用 XMLReader，因为我需要从 xpath 获取条件，而不是整个文档...

【问题讨论】：

  • 您不需要 XMLReader 来评估 xpath。见stackoverflow.com/questions/5493525/php-dom-xpath
  • 是的，我需要，因为我只想获取提要的一部分，而不是整个文档。 SimpleXML 的搜索速度很慢。此提要有 20 000 个元素。
  • 显示 $xml 的内容

标签： php xml xpath simplexml xmlreader


【解决方案1】：

您的 while 似乎连一次都没有执行。代码应该读取，直到需要的条件发生

 while($reader->read()) {
   if (reader->nodeType == XMLREADER::ELEMENT && $reader->name == 'XMLSOCCER.COM') ) {
        $xml = simplexml_import_dom($dom->importNode($reader->expand(),true));
        $pathXML = $xml->xpath('//Odds[contains(Bookmaker,"Interwetten")]');
        /*if($this->getExpression()){
            $xml->xpath($this->getExpression());
        }*/
        break;
    }
}

【讨论】：

  • 哦，是的，现在可以使用了！谢谢！
  • 很高兴为您提供帮助。祝你好运！
  • 请教一个问题。这段代码是把刚刚搜索到的提要加载到内存中，还是将整个文档加载到内存中，然后像 SimpleXML 一样从他的内存中搜索返回给我，因为这段代码像加载整个文档一样需要时间......
  • 不幸的是，我没有使用 xnlreader，但我认为您需要使用方法来扩展仅找到的节点，或者保存扫描 xml 的片段，直到 XMLSOCCER.COM 的关闭元素
  • 这个答案最终没有提供答案（甚至被接受），因为它导致了下一个问题：stackoverflow.com/q/30963733/367456（仅供参考）
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