php XPath 反向数组 [英] php XPath reverse array

问题描述

您好，我正在尝试反转 php 对象，但没有成功示例 html 在这里:sample_html

Hi there I am trying to reverse php object but I am not successful sample html is here: sample_html

$html = file_get_contents($file);

$doc = new DOMDocument(); 
@$doc->loadHTML($html);
$xpath = new DOMXpath($doc);


//get the element you want to append to
$classname = 'pam _3-95 _2pi0 _2lej uiBoxWhite noborder';
$divs = $xpath->query("//*[contains(@class, '$classname')]");
var_dump($divs[0]);
$count = count($divs);
$divs2 = array();
for ($i = $count-1; $i >= 0; $i--) {
    $divs = $divs[$i];
}
var_dump($divs[0]);

它给出了不能使用 DOMElement 类型的对象作为数组在

its giving Cannot use object of type DOMElement as array in

当我反转这个 div 时，我想用类似

when I have this div reversed I would like to append it back to original html with something like

$doc->saveHTML();

TLDR:我可以得到 div 但不能反转它

TLDR: I can get the div but cannot reverse it

感谢您的回答和问候

推荐答案

虽然我不知道这是否符合您的 html 结构要求，但是如果您的所有 div 都是直接兄弟(如列表)并且它们都共享相同的家长，您可以使用以下内容.

Whilst I don't know if this meets your html structure requirements, but if all your divs are immediate siblings (like a list) and they all share the same parent, you can use the following.

$divs = $xpath->query("//*[contains(@class, '$classname')]");

for( $x = 0; $x < $divs->length ; $x++ )
{
  if( $divs[ $x ] !== $divs[ $x ]->parentNode->firstChild )
  {
    $divs[ $x ]->parentNode->insertBefore( $divs[ $x ], $divs[ $x ]->parentNode->firstChild );
  }
}

<小时>

利用 iterator_to_array 和 cloneNode

$divs = iterator_to_array( $xpath->query("//*[contains(@class, '$classname')]") );
$keys = array_reverse( array_keys( $divs ) );
foreach( $divs as $x => $div )
{
  $div->parentNode->replaceChild( $divs[ $keys[ $x ] ]->cloneNode(true), $div );
}

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