阅读全部<；td>；使用PHP的标签

我有一些API的html输出，我想从输出中读取所有标记

PHP脚本的输入：

<table bgcolor="white" border="1" cellpadding="0" cellspacing="0" height="290" width="450" bordercolor="dodgerblue" align="center" class="txt">
   <tbody>
      <tr>
         <td>
            <table border="0" cellpadding="0" cellspacing="0" height="288" width="448" bgcolor="#ffffff" bordercolor="darkgray" class="txt">
               <tbody>
                  <tr>
                     <td align="middle"><img height="18" src="/assets/images/dn1.gif" width="28"></td>
                     <td align="middle"></td>
                     <td align="middle"></td>
                     <td align="middle"></td>
                     <td align="middle"></td>
                     <td align="middle"></td>
                     <td align="middle"></td>
                     <td align="middle"><img height="18" src="/assets/images/up1.gif" width="28"></td>
                     <td align="middle"><img height="18" src="/assets/images/dn1.gif" width="28"></td>
                     <td align="middle"></td>
                     <td align="middle"></td>
                     <td align="middle"></td>
                     <td align="middle"></td>
                     <td align="middle"></td>
                     <td align="middle"></td>
                     <td align="middle"><img height="18" src="/assets/images/up1.gif" width="28"></td>
                  </tr>
                  <tr>
                     <td align="middle"></td>
                     <td align="middle"><img height="18" src="/assets/images/dn1.gif" width="28"></td>
                     <td align="middle"></td>
                     <td align="middle"><strong><img src="/assets/images/5.gif" width="28" height="18"></strong></td>
                     <td align="middle"></td>
                     <td align="middle"></td>
                     <td align="middle"><img height="18" src="/assets/images/up1.gif" width="28"></td>
                     <td align="middle"><strong><img src="/assets/images/4.gif" width="28" height="18"></strong></td>
                     <td align="middle"></td>
                     <td align="middle"><img height="18" src="/assets/images/dn1.gif" width="28"></td>
                     <td align="middle"></td>
                     <td align="middle"></td>
                     <td align="middle"><strong><img src="/assets/images/3.gif" width="28" height="18"></strong></td>
                     <td align="middle"></td>
                     <td align="middle"><img height="18" src="/assets/images/up1.gif" width="28"></td>
                     <td align="middle"></td>
                  </tr>
               </tbody>
            </table>
         </td>
      </tr>
   </tbody>
</table>

---

我试过了，但它不起作用…

的目标是为

中的每个

获取

@src

属性值，同时保持适当的td索引，类似的方法应该可以做到这一点

例子：

---

输出：

---

这里真正的目标是什么？最终的结果是什么？从这些标签中你真正需要的是什么？事实上，我从第三方API获得了上面的html，我想解析它，并更改上面html的UI以用于我的自定义显示它仍然不清楚、广泛和模糊。无论如何，我建议使用

DOMDocument

+

DOMXpath

，它内置于PHP中，应该可以完成这项工作，不管你需要什么，我都会试试……谢谢你，我可以直接在数组中获得src来代替完整的标记吗？是的。。。但是有了适当的td索引…例如它有32个td，所以我想要所有td的内容。

array(
[0] => First td content
[1] => Second td content

.
.
. so on...

)

$dom = new DOMDocument();
$dom->loadHTML($html);
$xpath = new DOMXPath($dom);

$tds = $xpath->query('//td[not(descendant::td)]');
$output = [];

foreach ($tds as $td) {
    $data = null;
    $sources = $xpath->query('.//img/@src', $td);
    foreach ($sources as $src) {
        $data = $src->value;
    }

    $output[] = $data;
}

var_export($output);

array (
    0 => '/assets/images/dn1.gif',
    1 => NULL,
    2 => NULL,
    3 => NULL,
    4 => NULL,
    5 => NULL,
    6 => NULL,
    7 => '/assets/images/up1.gif',
    8 => '/assets/images/dn1.gif',
    9 => NULL,
    10 => NULL,
    11 => NULL,
    12 => NULL,
    13 => NULL,
    14 => NULL,
    15 => '/assets/images/up1.gif',
    16 => NULL,
    17 => '/assets/images/dn1.gif',
    18 => NULL,
    19 => '/assets/images/5.gif',
    20 => NULL,
    21 => NULL,
    22 => '/assets/images/up1.gif',
    23 => '/assets/images/4.gif',
    24 => NULL,
    25 => '/assets/images/dn1.gif',
    26 => NULL,
    27 => NULL,
    28 => '/assets/images/3.gif',
    29 => NULL,
    30 => '/assets/images/up1.gif',
    31 => NULL,
)