原文网址：https://www.youyong.top/article/11595c6d9141d
PHP中有时也会涉及到对html内容的处理，去除一些标签样式之类的，下面就举例说明
原文网址：https://www.youyong.top/article/11595c6d9141d
用正则匹配去除。举例如下:
1：去除标签 a
$content = preg_replace("/<a[^>]*>/i", "", $content);
$content = preg_replace("/<\/a>/i", "", $content);
2：去除标签 div
$content = preg_replace("/<div[^>]*>/i", "", $content);
$content = preg_replace("/<\/div>/i", "", $content);
3: 去除 注释内容
$content = preg_replace("/<!--[^>]*-->/i", "", $content);//注释内容
4： 去除 标签属性 style id class lang width height face 等
$content = preg_replace("/style=.+?['|\"]/i",'',$content);
$content = preg_replace("/class=.+?['|\"]/i",'',$content);
$content = preg_replace("/id=.+?['|\"]/i",'',$content);
$content = preg_replace("/lang=.+?['|\"]/i",'',$content);
$content = preg_replace("/width=.+?['|\"]/i",'',$content);
$content = preg_replace("/height=.+?['|\"]/i",'',$content);
$content = preg_replace("/border=.+?['|\"]/i",'',$content);
$content = preg_replace("/face=.+?['|\"]/i",'',$content);
$content = preg_replace("/face=.+?['|\"]/",'',$content);