我有很长的无序列表(<ul>
),我需要将其分为三列。我有这样的事情:
$num = substr_count($ul, '<li>')/3;
$sep = round($num, 0);
...现在我需要找到$ ul的第n个元素($ sep)并替换它。
<li>
至</ul><ul><li>
编辑:
我的列表如下所示:
<ul>
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
<li>6</li>
</ul>
......我想这样:
<ul>
<li>1</li>
<li>2</li>
</ul>
<ul>
<li>3</li>
<li>4</li>
</ul>
<ul>
<li>5</li>
<li>6</li>
</ul>
答案 0 :(得分:2)
我总是喜欢使用本机函数来解析和操作HTML,在本例中为PHP's DOM classes。
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<FrameLayout
android:id="@+id/fragment_frame"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="@id/bottom_navigation" />
<android.support.design.widget.BottomNavigationView
android:id="@+id/bottom_navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:background="@color/navigationItemBackground"
app:itemIconTint="@color/navigationItemIcon"
app:itemTextColor="@color/navigationItemtext"
app:menu="@menu/bottom_navigation_items"
android:layout_alignParentStart="true" />
</RelativeLayout>
答案 1 :(得分:1)
这将获得一个无序的HTML列表,将其划分为三个UL,并将其吐回:
<?php
$ul = "<ul>
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
<li>6</li>
</ul>";
function divideUl($ul) {
$ulArray = explode("\n", $ul);
array_pop($ulArray);
array_shift($ulArray);
$num = substr_count($ul, '<li>')/3;
$sep = round($num);
$string = "<ul>";
foreach ($ulArray as $i => $li) {
if ($i % $sep === 0 && $i !== 0) $string .= "</ul>";
if ($i % $sep === 0 && $i !== 0) $string .= "<ul>";
$string .= $li;
}
$string .= "</ul>";
return $string;
}
echo divideUl($ul);
答案 2 :(得分:0)
我最终得到了这个解决方案:
$ul = '<ul><li>1</li><li>2</li><li>3</li><li>4</li><li>5</li><li>6</li></ul>';
$doc = new DOMDocument();
$doc->loadHTML('<?xml encoding="UTF-8">' . $ul);
$liList = $doc->getElementsByTagName('li');
$liValues = array();
foreach ($liList as $li) {
$liValues[] = $li->c14n();
}
$num = count($liValues) / 3;
$size = round($num+1);
$i = 0;
$list = '';
foreach ($liValues as $listItem) {
if ($i !== 0 && $i % $size === 0) {
$list.= '</ul><ul>';
}
$list.= $listItem;
$i++;
}
echo '<ul>'.html_entity_decode(str_replace(array('</br>', '</img>'), '', $list)).'</ul>';