How to convert html format to text format in php

这篇文章主要介绍了php实现转换html格式为文本格式的方法,通过一个自定义函数实现针对HTML标签的过滤,涉及php正则替换的相关操作技巧,需要的朋友可以参考下

有时候需要转换html格式的字符串为文本，但又需要保持一定的格式，比如要求段落变成的分段格式就可以用下面这个函数

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("/<\\/?p>/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", &#39;"&#39;, $str);
 $str = preg_replace("/&ldquo/i", &#39;"&#39;, $str);
 $str = preg_replace("/‘/i", "&#39;", $str);
 $str = preg_replace("/&lsquo/i", "&#39;", $str);
 $str = preg_replace("/&#39;/i", "&#39;", $str);
 $str = preg_replace("/&rsquo/i", "&#39;", $str);
 $str = preg_replace("/>/i", ">", $str);
 $str = preg_replace("/>/i", ">", $str);
 $str = preg_replace("/”/i", &#39;"&#39;, $str);
 $str = preg_replace("/&rdquo/i", &#39;"&#39;, $str);
 $str = strip_tags($str);
 $str = html_entity_decode($str, ENT_QUOTES, "utf-8");
 $str = preg_replace("/.*?;/i", "", $str);
 return $str;
}

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