万能的正则1.分析URL正则(?<protocol>[a-z]{2,6}):\/\/((?<subdomain>[a-z0-9]{0,10}\.{1}){0,2}(?<domain>[a-z\-0-9]{1,30}){1}\.{1}(?<extension>[a-z]{1,10}){1}|(?<[...]

输入正文$text，使用正则替换后去除<a></a>标签。代码如下： $pattern = "/(<a[^>]+>)(<img[^>]+>)(<[^>]+>)/is"; $replacement = '$2'; $result = preg_replace($pat[...]