如何进行数组 xpath 查询？答案

【问题标题】：how to make an array xpath queries?如何进行数组 xpath 查询？
【发布时间】：2021-10-28 08:43:07
【问题描述】：

如何使用 xpath 制作这样的数组？？？？请帮我我目前正在尝试从 SIMPLEXML/XPATH 查询生成的数组中提取值。我的尝试没有成功，如果有人可以看一下，将不胜感激。

 <ol class="font_8 timeline-delivered">
  <li class="timelineDate">28 Aug 2021</li>
    <li class="Timeline-event">
        <div class="A">AA</div>
        <div class="b">BB</div>
        <div class="C">CC</div>
    </li>
    <li class="timelineDate">29 Aug 2021</li>
    <li class="Timeline-event">
        <div class="A">AA</div>
        <div class="b">BB</div>
    </li>
    <li class="timelineDate">30 Aug 2021</li>
    <li class="Timeline-event">
        <div class="A">AA</div>
        <div class="b">BB</div>
        <div class="C">CC</div>
    </li>
    <li class="timelineDate">31 Aug 2021</li>
    <li class="Timeline-event">
        <div class="A">AA</div>
    </li>
 </ol>

有没有其他人有过这种行为和 php 中的相关 xpath 查询的经验？

$tabledata = $xpath->query('//ol/li[contains(@class, "timelineDate")   or contains(@class, "Timeline-even")]');

foreach($tabledata as $row  => $tr) {

  foreach($tr->childNodes as $td) {
     foreach($td->childNodes as $td) {
       $ShipmentDetail[$row][] = preg_replace('~[\r\n]+~', '', trim($td->textContent));
    }
}
  $ShipmentDetail[$row] = array_values(array_filter($ShipmentDetail[$row]));

}
echo '<pre>';
print_r($ShipmentDetail);

结果数组

    Array
    (
        [0] => Array
            (
                [0] => 28 Aug 2021
            )
        [1] => Array
            (
                [0] => AA
                [1] => BB
                [2] => CC
            )
        [2] => Array
            (
                [0] => 29 Aug 2021
            )

        [3] => Array
            (
                [0] => AA
                [1] => BB
            )

        [4] => Array
            (
                [0] => 30 Aug 2021
            )

        [5] => Array
            (
                [0] => AA
                [1] => BB
                [2] => CC
            )
        [6] => Array
            (
                [0] => 31 Aug 2021
            )

        [7] => Array
            (
                [0] => AA

            )
    )

我想成为这样的人

    Array
    (
        [0] => Array
            (
                [0] => 28 Aug 2021
                [1] => AA
                [2] => BB
                [3] => CC
            )
        [1] => Array
            (
                [0] => 29 Aug 2021
                [1] => AA
                [2] => BB
            )
        [2] => Array
            (
                [0] => 30 Aug 2021
                [1] => AA
                [2] => BB
                [3] => CC
            )
        [3] => Array
            (
                [0] => 31 Aug 2021
                [1] => AA
            )
    )

【问题讨论】：

标签： php arrays curl xpath simple-html-dom

【解决方案1】：

这将返回与您想要的完全相同的结果：

$ShipmentDetail = array();

$DOM = new DOMDocument();
$DOM->loadHTML($html);
$xpath = new DOMXPath($DOM);
$event_nodes = $xpath->query('//li[@class="Timeline-event"]');
foreach ($event_nodes as $event_node) {
    $event = array();
    $event_date = $xpath->evaluate('string(./preceding-sibling::li[1]/text())', $event_node);
    $event[] = $event_date;
    $details = $xpath->query('./div', $event_node);
    foreach ($details as $detail_node) {
        $detail = $xpath->evaluate('string(./text())', $detail_node);
        $event[] = $detail;
    }
    $ShipmentDetail[] = $event;

}

【讨论】：

谢谢@gangabass