求关于正则表达式PHP过滤编辑器的新闻内容

<font id=888 style="font-size: 18px; font-family: font-size: 18px"><p><strong><span lang=en-us style="font-size: 16pt; font-family: 仿宋_gb2312; mso-hansi-font-family: calibri; mso-bidi-font-family: 'times new roman'; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa">    一级</span><span style="font-size: 16pt; font-family: 仿宋_gb2312; mso-hansi-font-family: calibri; mso-bidi-font-family: 'times new roman'; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa">标题<span lang=en-us>粗体1</span></span></strong></p> <p><span style="font-size: 16pt; font-family: 仿宋_gb2312; mso-hansi-font-family: calibri; mso-bidi-font-family: 'times new roman'; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa">新闻内容</span></p> <p><span style="font-size: 16pt; font-family: 仿宋_gb2312; mso-hansi-font-family: calibri; mso-bidi-font-family: 'times new roman'; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa"><strong></strong></span></p> <p><span style="font-size: 16pt; font-family: 仿宋_gb2312; mso-hansi-font-family: calibri; mso-bidi-font-family: 'times new roman'; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa"><strong><img  src="http://192.168.1.1/webimage/2222.jpg"    style="max-width:90%"求关于正则表达式PHP过滤编辑器的新闻内容" ></strong></span></p> <p><span style="font-size: 16pt; font-family: 仿宋_gb2312; mso-hansi-font-family: calibri; mso-bidi-font-family: 'times new roman'; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa"><strong>一级标题粗体2</strong></span></p><p><span>立即学习</span>“<a href="https://pan.quark.cn/s/7fc7563c4182" style="text-decoration: underline !important; color: blue; font-weight: bolder;" rel="nofollow" target="_blank">PHP免费学习笔记（深入）</a>”；</p> <br><br><p><span style="font-size: 16pt; font-family: 仿宋_gb2312; mso-hansi-font-family: calibri; mso-bidi-font-family: 'times new roman'; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa"></span> </p> <p><span style="font-size: 16pt; font-family: 仿宋_gb2312; mso-hansi-font-family: calibri; mso-bidi-font-family: 'times new roman'; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa"><strong><img  src="http://192.168.1.1/webimage/2233.jpg"    style="max-width:90%"求关于正则表达式PHP过滤编辑器的新闻内容" ></strong></span></p> <p><span style="font-size: 16pt; font-family: 仿宋_gb2312; mso-hansi-font-family: calibri; mso-bidi-font-family: 'times new roman'; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa"></span></p> <p align=center><span style="font-family: 仿宋_gb2312; font-size: 16pt; mso-hansi-font-family: calibri; mso-bidi-font-family: 'times new roman'; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa">这段文字为居中</span></p><br><p align=right><span style="font-family: 仿宋_gb2312; font-size: 16pt; mso-hansi-font-family: calibri; mso-bidi-font-family: 'times new roman'; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa">这段文字为右对齐</span></p><br><p align=left><span style="font-family: 仿宋_gb2312; font-size: 16pt; mso-hansi-font-family: calibri; mso-bidi-font-family: 'times new roman'; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa">这段文字是斜体</span></p><br><p align=left><span style="font-family: 仿宋_gb2312; font-size: 16pt; mso-hansi-font-family: calibri; mso-bidi-font-family: 'times new roman'; mso-ansi-language: en-us; mso-fareast-language: zh-cn; mso-bidi-language: ar-sa"><a title="" href="http://www.baidu.com/">加一个链接</a></span></p></font>

<p><strong>一级标题粗体</strong></p><p>新闻内容</p><p><img  src="http://192.168.1.1/Webimage/2222.jpg" / alt="求关于正则表达式PHP过滤编辑器的新闻内容" ></p><p>第二段新闻正文</p><p><strong>一级标题粗体2</strong></p>
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                <p><img  src="http://192.168.1.1/Webimage/2233.jpg" / alt="求关于正则表达式PHP过滤编辑器的新闻内容" ></p><p   style="max-width:90%">这段文字为居中</p><p style="text-align: right;">这段文字为右对齐</p><p><em>这段文字为斜体</em></p><p><a href="http://www.baidu.com">加一个链接</a></p>

$mysql_db_hostname = "localhost";$mysql_db_user = "root";$mysql_db_password = "root";$mysql_db_database = "test";$con = mysqli_connect($mysql_db_hostname, $mysql_db_user, $mysql_db_password, $mysql_db_database);mysqli_query($con, "SET NAMES utf8");$sql="SELECT * FROM editor";$re=mysqli_query($con,$sql)or die("读取数据出错". mysqli_error());while($row=mysqli_fetch_array($re)){$str=$row["news"];echo $str;}

//去掉不允许的 tag$s = strip_tags($s,'<p>,<a>,<img  alt="求关于正则表达式PHP过滤编辑器的新闻内容" >,<strong>,<em>');//去掉tag 里面的属性$s = preg_replace('/<(p|strong|em)[^>]+?>/i','<$1>',$s);//img 和 a 单独处理$s = preg_replace('/<(a|img).+?(href|src)="([^"]+?)"[^>]*?>/i','<$1 $2="$3">',$s);echo $s;

//去掉不允许的 tag$s = strip_tags($s,'<p>,<a>,<img  alt="求关于正则表达式PHP过滤编辑器的新闻内容" >,<strong>,<em>');//去掉tag 里面的属性$s = preg_replace('/<(p|strong|em)[^>]+?>/i','<$1>',$s);//img 和 a 单独处理$s = preg_replace('/<(a|img).+?(href|src)="([^"]+?)"[^>]*?>/i','<$1 $2="$3">',$s);echo $s;

//去掉不允许的 tag$s = strip_tags($s,'<p>,<a>,<img  alt="求关于正则表达式PHP过滤编辑器的新闻内容" >,<strong>,<em>');//去掉tag 里面的属性$s = preg_replace('/<(strong|em)[^>]+?>/i','<$1>',$s);//img 和 a 单独处理$s = preg_replace('/<(a|img).+?(href|src)="([^"]+?)"[^>]*?>/i','<$1 $2="$3">',$s);//单独处理 p$s = preg_replace('/<p\s*align="*?(right|left|center)"*?.*?>/i','<p   style="max-width:90%">',$s);echo $s;

//去掉不允许的 tag$s = strip_tags($s,'<p>,<a>,<img  alt="求关于正则表达式PHP过滤编辑器的新闻内容" >,<strong>,<em>');//去掉tag 里面的属性$s = preg_replace('/<(strong|em)[^>]+?>/i','<$1>',$s);//img 和 a 单独处理$s = preg_replace('/<(a|img).+?(href|src)="([^"]+?)"[^>]*?>/i','<$1 $2="$3">',$s);//单独处理 p$s = preg_replace('/<p\s*align="*?(right|left|center)"*?.*?>/i','<p   style="max-width:90%">',$s);echo $s;