php实现网页HTML标签补全方法
如果你的网页内容的html标签显示不全,有些表格标签不完整而导致页面混乱,或者把你的内容之外的局部html页面给包含进去了,我们可以写个函数方法来补全html标签以及过滤掉无用的html标签.
php实现网页HTML标签补全方法
php使HTML标签自动补全闭合函数方法如下:
<div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>
function closetags($html) {
preg_match_all('#<(?!metaimgbrhrinput\b)\b([a-z]+)(?: .*)?(?#iU', $html, $result);
$openedtags = $result[1];
preg_match_all('##iU', $html, $result);
$closedtags = $result[1];
$len_opened = count($openedtags);
if (count($closedtags) == $len_opened) {
return $html;
}
$openedtags = array_reverse($openedtags);
for ($i=0; $i < $len_opened; $i++) {
if (!in_array($openedtags[$i], $closedtags)) {
$html .= '';
} else {
unset($closedtags[array_search($openedtags[$i], $closedtags)]);
}
}
return $html;
}
<div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'><strong>解析: </strong>array_reverse() : 此函数将原数组中的元素顺序翻转，创建新的数组并返回。如果第二个参数指定为 true，则元素的键名保持不变，否则键名将丢失。
array_search() : array_search(value,array,strict),此函数与in_array()一样在数组中查找一个键值。如果找到了该值，匹配元素的键名会被返回。如果没找到，则返回 false。 如果第三个参数strict被指定为 true，则只有在数据类型和值都一致时才返回相应元素的键名。
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