PHP HTML到纯文本转换分享

方式1(来自网络)

/**
 * html 转纯文本
 * @param $str
 * @return mixed
 */
function html2text($str) {
    $str = preg_replace("/<style .*?<\\/style>/is", "", $str);
    $str = preg_replace("/<script .*?<\\/script>/is", "", $str);
    $str = preg_replace("/<br \\s*\\/>/i", ">>>>", $str);
    $str = preg_replace("/<\\/?p>/i", ">>>>", $str);
    $str = preg_replace("/<\\/?td>/i", "", $str);
    $str = preg_replace("/<\\/?div>/i", ">>>>", $str);
    $str = preg_replace("/<\\/?blockquote>/i", "", $str);
    $str = preg_replace("/<\\/?li>/i", ">>>>", $str);
    $str = preg_replace("/ /i", " ", $str);
    $str = preg_replace("/ /i", " ", $str);
    $str = preg_replace("/&/i", "&", $str);
    $str = preg_replace("/&/i", "&", $str);
    $str = preg_replace("/</i", "<", $str);
    $str = preg_replace("/</i", "<", $str);
    $str = preg_replace("/“/i", '"', $str);
    $str = preg_replace("/&ldquo/i", '"', $str);
    $str = preg_replace("/‘/i", "'", $str);
    $str = preg_replace("/&lsquo/i", "'", $str);
    $str = preg_replace("/'/i", "'", $str);
    $str = preg_replace("/&rsquo/i", "'", $str);
    $str = preg_replace("/>/i", ">", $str);
    $str = preg_replace("/>/i", ">", $str);
    $str = preg_replace("/”/i", '"', $str);
    $str = preg_replace("/&rdquo/i", '"', $str);
    $str = strip_tags($str);
    $str = html_entity_decode($str, ENT_QUOTES, "utf-8");
    $str = preg_replace("/&#.*?;/i", "", $str);
    return $str;
}

输出结果:

$str='<li><a id="blog_nav_sitehome" class="menu" href="http://www.cnblogs.com/">博客园</a></li>';
echo html2text($str);

输出:

>>>>博客园>>>>

如果li标记不完整

$str='li><a id="blog_nav_sitehome" class="menu" href="http://www.cnblogs.com/">博客园</a></li';
echo html2text($str);

输出:

li>博客园

方式2,采用html2text类

链接地址:http://www.chuggnutt.com/html2text

怎么下载,见文章,这里就不描述了

require_once "./html2text.class.php";

$str='<li><a id="blog_nav_sitehome" class="menu" href="http://www.cnblogs.com/">博客园</a></li>';
$h2t =new html2text($str);
$text = $h2t->get_text();
echo $text;

输出:

* 博客园 [1] Links: ------ [1] http://www.cnblogs.com/

如果li标记不完整

$str='li><a id="blog_nav_sitehome" class="menu" href="http://www.cnblogs.com/">博客园</a></li';
$h2t =new html2text($str);
$text = $h2t->get_text();
echo $text;

输出:

li>博客园 [1] Links: ------ [1] http://www.cnblogs.com/

注:具体采用那个,个人自己衡量就行~