本文介绍了php 清空字符串中的html标签
要过滤字符串中所有的html标签有两种方法一种是我们自己写一个函数,用正则过滤,一个是用php自带函数strip_tags哦。
复制代码 代码如下:
function clear_html_label($html)
{
$search = array ("'<script>]*?>.*?</script>'si", "']*?>'si", "'([rn])[s]+'", "'&(quot|#34);'i", "'&(amp|#38);'i", "'&(lt|#60);'i", "'&(gt|#62);'i", "'&(nbsp|#160);'i", "'&(iexcl|#161);'i", "'&(cent|#162);'i", "'&(pound|#163);'i", "'&(copy|#169);'i", "'(d+);'e");
$replace = array ("", "", "1", """, "&", "", " ", chr(161), chr(162), chr(163), chr(169), "chr(1)");
return preg_replace($search, $replace, $html);
}
//实例应用
$string ='aaa
<script>fdsafsa'; <BR>echo clear_html_label($string);//aaa fdsafsa <br><br>//利用php自带函数strip_tags(); www.zzarea.com <BR>echo strip_tags($string);//aaa fdsafsa <BR></script>
总结,
上面二个函数得出的结果完全相同,一个是用户自定义的过滤所有html函数,一个是php内置函数,但在效绿上来说php的strip_tags()函数,肯定要高很多。至少为什么我就不说多了。

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