Xpath循环问题将简单的HTML表解析为php数组

Question

因此，我的上一个问题： PHP将html表转换为JSON很快就被视为重复项，而我仍在努力满足自己的需求。 我认为这主要是循环中的逻辑问题，我需要其他人对此进行研究。

以该表为例：

 <table id="Details" class="DATA_TABLE DATA_TABLE_WO_TOTAL"> <tr> <th>Application</th> <th>Version number</th> <th>Virtual Administration Server</th> <th>Group</th> <th>Device</th> <th>Installed</th> <th>Last visible time</th> <th>Last connection to Administration Server</th> <th>IP address</th> </tr> <tr> <td class="sD">some text</td> <td class="sD">10.2.5.3201</td> <td class="sD"></td> <td class="sD">Thin PC</td> <td class="sD">PC#</td> <td class="sD">date</td> <td class="sD">date</td> <td class="sD">date</td> <td class="sD">ip address</td> </tr> <tr> <tr> <td class="sD">some more text</td> <td class="sD">10.2.5.3201</td> <td class="sD"></td> <td class="sD">Thin PC</td> <td class="sD">PC#</td> <td class="sD">date</td> <td class="sD">date</td> <td class="sD">date</td> <td class="sD">ip address</td> </tr> </table> 

我需要创建一个数组（以后可以将其转换为json），其中th标签是键，然后彼此内部的所有td标签tr都是与这些键对应的数据。 我有以下php代码：

 <?php $dom = new DOMDocument; $dom->loadHTML($cleantable2); //this is the table above $xpath = new DOMXPath($dom); foreach($xpath->query('//table/tr') as $tr){ $tmp = []; foreach($xpath->query('//table/tr/th', $tr) as $th){ $key = $th->textContent; foreach($xpath->query('td', $tr) as $td){ $tmp[$key] = trim($td->textContent); } } $result[]=$tmp; } var_dump($result); ?> 

它确实获得了正确的键，但没有获得数据示例输出：

  [89]=> array(9) { ["Application"]=> string(13) "192.168.6.104" ["Version number"]=> string(13) "192.168.6.104" ["Virtual Administration Server"]=> string(13) "192.168.6.104" ["Group"]=> string(13) "192.168.6.104" ["Device"]=> string(13) "192.168.6.104" ["Installed"]=> string(13) "192.168.6.104" ["Last visible time"]=> string(13) "192.168.6.104" ["Last connection to Administration Server"]=> string(13) "192.168.6.104" ["IP address"]=> string(13) "192.168.6.104" } 

如您所见，它仅选择每个密钥的IP地址，而不是其余数据。 我究竟做错了什么？ 有人可以帮忙，而不仅仅是将其视为重复项吗？ 试图解决这一问题超过一天，我很确定我的问题只是没有正确循环，但我没有看到它...

谢谢

Answer 1

$strhtml='
<table id="Details" class="DATA_TABLE DATA_TABLE_WO_TOTAL">
  <tr>
    <th>Application</th>
    <th>Version number</th>
    <th>Virtual Administration Server</th>
    <th>Group</th>
    <th>Device</th>
    <th>Installed</th>
    <th>Last visible time</th>
    <th>Last connection to Administration Server</th>
    <th>IP address</th>
  </tr>
  <tr>
    <td class="sD">some text</td>
    <td class="sD">10.2.5.202</td>
    <td class="sD">Plato</td>
    <td class="sD">Thin PC</td>
    <td class="sD">PC#</td>
    <td class="sD">date a</td>
    <td class="sD">date b</td>
    <td class="sD">date c</td>
    <td class="sD">10.25.100.1</td>
  </tr>
  <tr>
     <tr>
    <td class="sD">some more text</td>
    <td class="sD">10.2.5.321</td>
    <td class="sD">Socrates</td>
    <td class="sD">Thick PC</td>
    <td class="sD">PC#</td>
    <td class="sD">date x</td>
    <td class="sD">date y</td>
    <td class="sD">date z</td>
    <td class="sD">10.25.100.2</td>
  </tr>
</table>';

给定以上html片段，您可能需要执行以下操作吗？ 这些评论应该有助于了解我所做的事情

libxml_use_internal_errors( true );
$dom=new DOMDocument;
$dom->loadHTML( $strhtml );
libxml_clear_errors();

$xp=new DOMXPath( $dom );
/* find the `th` elements */
$col = $xp->query( '//tr/th' );

/* temp arrays */
$tmp=$out=$keys=array();


if( $col->length > 0 ){
    /* get all headers as keys */
    foreach( $col as $node )$keys[]=$node->nodeValue;

    /* get all table cell data - store in single array */
    $col=$xp->query( '//tr/td[ @class="sD" ]' );
    foreach( $col as $node )$tmp[]=$node->nodeValue;

    /* split data into chunks according to number of columns */
    $rows=array_chunk( $tmp, count( $keys ) );

    /* combine keys and chunks */
    foreach( $rows as $row ){
        $tmp=array();
        foreach( $row as $i => $value ) $tmp[ $keys[ $i ] ]=$value;
        $out[]=$tmp;
    }

    echo json_encode( $out );
}

输出：

[
    {
        "Application":"some text",
        "Version number":"10.2.5.202",
        "Virtual Administration Server":"Plato",
        "Group":"Thin PC",
        "Device":"PC#",
        "Installed":"date a",
        "Last visible time":"date b",
        "Last connection to Administration Server":"date c",
        "IP address":"10.25.100.1"
    },
    {
        "Application":"some more text",
        "Version number":"10.2.5.321",
        "Virtual Administration Server":"Socrates",
        "Group":"Thick PC","Device":"PC#",
        "Installed":"date x",
        "Last visible time":"date y",
        "Last connection to Administration Server":"date z",
        "IP address":"10.25.100.2"
    }
]