Question

我正在尝试将同一div类与父div类合并。试图匹配正则表达式http://www.regexr.com/3bim9。但是我对此并不擅长，我也没有得到任何关于如何做到这一点并思考大约4个小时。这也适用于多个内部div。我有预感，可以用preg_replace

完成

当前输出：

<div class="dotted-highlight">
  Here is a check list to determine whether.
  <div class="dotted-highlight">
    Tick all those apply to you. The more boxes you tick.
  </div>
</div>

预期输出

<div class="dotted-highlight">
  Here is a check list to determine whether.
  Tick all those apply to you. The more boxes you tick.
</div>

PHP

<?php

$textarea = '<div class="dotted-highlight">
      Here is a check list to determine whether.
      <div class="dotted-highlight">
        Tick all those apply to you. The more boxes you tick.
      </div>
    </div>';
$textarea = preg_replace('(<div class="dotted-highlight">){1,}(.*?)', '', $textarea);

?>

Answer 1

以下是使用PHP DOM和XPath实现它的方法：

    $html = "<<HTML STRING>>";
    $dom = new DOMDocument;
    $dom->loadHTML("<div id=\"tmptmptmp\">" . $html . "</div>", LIBXML_HTML_NOIMPLIED|LIBXML_HTML_NODEFDTD);
    $xp = new DOMXPath($dom);
    $links = $xp->query('//div');
    foreach ($links as $link) {
        $class = $link->getAttribute('class');
        $nested = $xp->query('.//div', $link);
        foreach ($nested as $n) {
            if ($n->getAttribute('class') == $class) {
               //$html = $doc->getElementsByTagName("html")->item(0);
               $fragment = $dom->createDocumentFragment();
               while ($n->childNodes->length > 0) {
                 $fragment->appendChild($n->childNodes->item(0));
               }
              $n->parentNode->replaceChild($fragment, $n);
            }
         }
    }
    echo preg_replace('/^\s*<div\s+id="tmptmptmp">\s*|\s*<\/div>\s*$/', '', $dom->saveHTML());

请参阅IDEONE demo

请注意，preg_replace仅用于对手动添加的<div>进行后期处理，以帮助解决HTML代码不是正确的HTML文档时出现的问题（例如，没有<html>和<body>标签）。

将具有相同类的div合并到具有相同类的更大div中

1 个答案: