DOMXPath查询来获取的复选框的名称在表列

Question

我有以下的HTML表格结构

<table id="gvPOItems"> 
     <tbody> 
     <tr> 
      <td class="grdItemClass"> 
       <span class="CSSchkupdatethis"> 
       <input id="gvPOItems_cbxForShipping_0" type="checkbox" name="gvPOItems$ctl02$cbxForShipping"> 
       </span> 
      </td> 
      <td class="grdItemClass"> 
       <span id="gvPOItems_lblProductID_0">685029</span> 
      </td> 
      <td> 
       <img src="" alt="Product Photo"> 
      </td> 
      <td class="grdItemClass">SWA400000009-W</td> 
      <td class="grdItemClass"> 
       <span id="gvPOItems_lblPOItemID_0"> 
       1162934PLN44532493 
       </span> 
      </td> 
      <td class="grdItemClass"> 
       Small Wonder Training Set White - 300 ml 
      </td> 
      <td class="grdItemClass"> 
       0 Months+, BPA Free, This training set is simple, easy-to-use and can be used for both girls and boys 
      </td> 
      <td class="grdItemClass">110.00</td> 
      <td class="grdItemClass">13.20</td> 
      <td class="grdItemClass">0.00000000000</td> 
      <td class="grdItemClass">96.80</td> 
      <td class="grdItemClass"> 
       <span id="gvPOItems_lblQuantity_0">1</span> 
      </td> 
      <td class="grdItemClass">96.80</td> 
      <td class="grdItemClass">&nbsp;</td> 
      <td class="grdItemClass">&nbsp;</td> 
      <td> 
       <select name="gvPOItems$ctl02$ddlStatus" id="gvPOItems_ddlStatus_0"> 
        <option value="0">Select</option> 
        <option value="Accepted">Accepted</option> 
        <option value="OutOfStock">OutOfStock</option> 
       </select> 
       <span id="gvPOItems_RequiredFieldValidator1_0" style="display:none;"> 
       * 
       </span> 
       </td> 
       <td class="grdItemClass">48</td> 
     </tr> 
    </tbody> 

我想在列获得的复选框的名字ex: gvPOItems$ctl02$cbxForShipping与XPath查询

我使用的代码是

<? php 
    function xpath($content) { 
    $dom = new DOMDocument(); 
    $dom->strictErrorChecking = false; 
    $dom->loadHTML($content); 
    return new DOMXPath($dom); 
    } 

    $countNode = $xpath->query('//table[@id="gvPOItems"]//tr'); 
    for($i=0;$i<=$countNode->length;$i++){ 
     $q= '//table[@id="gvPOItems"]/tr['.$i.']//td'; 
     $node = $xpath->query($q); 
     var_dump($node->item(0)); 
    } 

但是，我得到的输出是

object(DOMNodeList)#169 (1) { 
    ["length"]=> int(17) 
} 

什么应该是正确的查询获取列中的所有复选框的名称？

Answer 1

我改变了查询。您可以直接选择输入。

$xml = file_get_contents('test.xml'); 

function xpath($content) 
{ 
    $dom = new DOMDocument(); 
    $dom->strictErrorChecking = FALSE; 
    $dom->loadHTML($content); 
    return new DOMXPath($dom); 
} 

$xpath = xpath($xml); 

$countNode = $xpath->query('//table[@id="gvPOItems"]//tr'); 
var_dump($countNode); 

$q = '//input[@type="checkbox"]'; // whole document 
$q = '//table[@id="gvPOItems"]//input[@type="checkbox"]'; // only in the table 
$nodeList = $xpath->query($q); 
// var_dump($node);// ->item(0)); 
// var_dump($node->item(0)); 

foreach($nodeList as $node) 
{ 
    echo "path=" . $node->getNodePath(); 
    echo "\n"; 
    echo "name=" . $node->getAttribute('name'); 
}