Home > php教程 > PHP源码 > body text

php利用正则过滤链接、标签,空格,换行符程序

WBOY
Release: 2016-06-08 17:24:37
Original
1479 people have browsed it

本文章详细的总结了php利用正则过滤链接、标签,空格,换行符程序,有需要学习的朋友可参考一下。

<script>ec(2);</script>


strip_tags函数

strip_tags --- 去除字串中的HTML和PHP标签

语法 : string strip_tags (string str [, string allowable_tags])

 代码如下 复制代码

$text = '

Test paragraph.

Other text';
echo strip_tags($text);
echo "n";

// Allow

and
echo strip_tags($text, '

');
?>

正则过滤各种标签,空格,换行符

 代码如下 复制代码

$str=preg_replace("/s+/", " ", $str); //过滤多余回车
$str=preg_replace("/ $str=preg_replace("//si","",$str); //注释
$str=preg_replace("//si","",$str); //过滤DOCTYPE
$str=preg_replace("//si","",$str); //过滤html标签
$str=preg_replace("//si","",$str); //过滤head标签
$str=preg_replace("//si","",$str); //过滤meta标签
$str=preg_replace("//si","",$str); //过滤body标签
$str=preg_replace("//si","",$str); //过滤link标签
$str=preg_replace("//si","",$str); //过滤form标签
$str=preg_replace("/cookie/si","COOKIE",$str); //过滤COOKIE标签
$str=preg_replace("/(.*?)/si","",$str); //过滤applet标签
$str=preg_replace("//si","",$str); //过滤applet标签
$str=preg_replace("/(.*?)/si","",$str); //过滤style标签
$str=preg_replace("//si","",$str); //过滤style标签
$str=preg_replace("/(.*?)/si","",$str); //过滤title标签
$str=preg_replace("//si","",$str); //过滤title标签
$str=preg_replace("/(.*?)/si","",$str); //过滤object标签
$str=preg_replace("//si","",$str); //过滤object标签
$str=preg_replace("/(.*?)/si","",$str); //过滤noframes标签
$str=preg_replace("//si","",$str); //过滤noframes标签
$str=preg_replace("/(.*?)/si","",$str); //过滤frame标签
$str=preg_replace("//si","",$str); //过滤frame标签
$str=preg_replace("/(.*?)/si","",$str); //过滤script标签
$str=preg_replace("//si","",$str); //过滤script标签
$str=preg_replace("/javascript/si","Javascript",$str); //过滤script标签
$str=preg_replace("/vbscript/si","Vbscript",$str); //过滤script标签
$str=preg_replace("/on([a-z]+)s*=/si","On\1=",$str); //过滤script标签
$str=preg_replace("//si","&#",$str); //过滤script标签

php 正则过滤html 的超链接

 代码如下 复制代码
echo preg_replace("/(?]*)(?=>)/i","#", "你好,点这里看看你好,点这里看看");
?>

正则:/(?]*)(?=>)/
(? (?=exp) 匹配exp前面的位置
此正则 匹配 在 href= 之后 “>” 之前 的 非 “>” 的所有字符
例子:
找到这些字符(url)用 # 替换,就可以去掉html里的所有链接。

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Recommendations
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template