php - 尝试在php中获取非对象简单html dom的属性

Question

我试图用 SIMPLE HTML DOM 显示表格的每一行。另外在第 2 行末尾添加链接

<?php
    include('simple_html_dom.php');

    //Connection
    $link = mysqli_connect("localhost", "root", "", "webapp");
    mysqli_set_charset($link, "utf8");

    //Checks connection
    if (mysqli_connect_errno($link)) { exit("Failed to connect to MySQL: " . mysqli_connect_error()); }

    //Selects content of DB
    $postContent = mysqli_query($link, "SELECT post_content FROM wp_posts WHERE ID=1");

    //Creates array from content
    $result = mysqli_fetch_array($postContent);

    //Loads content as first element of array
    $html = str_get_html($result[0]);

    foreach($html->find('tr') as $element) {
        $temphtml = str_get_html($element->innertext);
        $tempico = $temphtml->find('a', 0)->innertext; //line #42
        echo "<tr>" . $temphtml . "<td><a href=\"delete.php?ico=" . $tempico . "\">Delete</a> // <a href=\"change.php?ico=" . $tempico . "\">Change</a></td></tr>";
}
?>

$tempico是稍后用作 url 参数的数字。在第 42 行，我试图从第一个 <a> 之间获取它。行中的标记。

我的问题是在第 42 行，出现错误 Notice: Trying to get property of non-object in C:\wamp\www\control.php on line 42

有什么办法可以做得更好或者不出现此错误？

这是数据库中的html

<table class="tg-table-orange">
<tbody id="SK">
<tr id="47 387 131">
    <td><a href="link" class="ico">47 387 131</a></td>
    <td class="47 387 131">BARDOSA</td>
    <td>s.r.o.</td>
    <td>06.09.2013</td>
    <td class="47 387 131"><a class="button1" href="link">Zarezervuj</a></td>
</tr>
</tbody>
</table>

提前谢谢

Answer 1

试试这个

HTML

<table class="tg-table-orange">
<tbody id="SK">
<tr id="47 387 131">
    <td><a href="link" class="ico">47 387 131</a></td>
    <td class="47 387 131">BARDOSA</td>
    <td>s.r.o.</td>
    <td>06.09.2013</td>
    <td class="47 387 131"><a class="button1" href="link">Zarezervuj</a></td>
</tr>
</tbody>
</table>

PHP

    foreach($html->find('tr') as $element) {
      foreach($element->find('td') as $td)
        {

                $temphtml = str_get_html($td->innertext);
                $tempico = $temphtml->plaintext; 
                break;

        }
        echo "<tr>" . $temphtml . "<td><a href=\"delete.php?ico=" . $tempico . "\">Delete</a> // <a href=\"change.php?ico=" . $tempico . "\">Change</a></td></tr>";
    }