輸入數組，其中包含 WordPress 帖子中的 html 標題<?php$headings = array(0 => "<h2>Number One</h2>",1 => "<h2>Number Two</h2>",2 => "<h2>Number Three</h2>",3 => "<h3>Number Four</h3>",4 => "<h2 id='iamanexistingid'>Number Five</h2>",5 => "<h3>Number Six</h4>",6 => "<h4>Number Seven</h2>",7 => "<h2>Number Eight</h2>");現在我想在嵌套無序列表中生成一個結構。輸出<ul><li>Number One</li><li>Number Two</li><li>Number Three   <ul>      <li>Number Four</li>   </ul><li>Number Five</li><li>Number Five   <ul>      <li>Number Six         <ul>            <li>Number Seven</li>         </ul>     </li>   </ul></li><li>Number Eight</li></ul>有沒有簡單的方法可以使用 Simple HTML DOM Parser 生成它？還是詭計？我最初的解決方案對于比一級更深的級別實際上不起作用，并且總體來說不好。我也不知道如何處理 H3 之后的 H4 或 H3 之后的 H3。<?php$headings = array(0 => "<h2>H2 Number One</h2>",1 => "<h2>H2 Number Two</h2>",2 => "<h2>H2 Number Three</h2>",3 => "<h3>H3 Number Four</h3>",4 => "<h2 id='iamanexistingid'>H2 Number Five</h2>",5 => "<h3>H3 Number Six</h4>",6 => "<h4>H4 Number Seven</h2>",7 => "<h3>H3 Number Eight</h2>",8 => "<h2>H2 Number Nine</h2>");$array = array();$lastlevel = 2;foreach ($headings as $key => $value) {  preg_match("/\<(?<name>\w+)(?<attributes>\s+[^>]*|)>/", $value, $matches);  $tagname = $matches[1];  $currentlevel = str_replace("h", "", "$tagname");  if($currentlevel == $lastlevel OR $currentlevel < $lastlevel) {      array_push($array, $value);  } elseif ($currentlevel > $lastlevel) {      array_push($array, [$value]);  }  $lastlevel = $currentlevel;}echo printArrayList($array);function printArrayList($array){    echo "<ul>";    foreach($array as $k => $v) {        if (is_array($v)) {            printArrayList($v);            continue;        }        echo "<li>" . $v . "</li>";    }    echo "</ul>";}