php - 正则表达式排除标题标签之间的内容

Question

这个排除标题标签内容的正则表达式有什么问题？

$plaintext = preg_match('#<title>(.*?)</title>#', $html);

$html有整个页面的html代码。

Answer 1

听起来您从来没有得到有效的答案。让我们删除标题标签。

搜索:(?s)<title>.*?</title>

替换:""

代码:

$regex = "~(?s)<title>.*?</title>~";
$ replaced = preg_replace($regex,"",$pagecontent);

解释正则表达式

(?s)                     # set flags for this block (with . matching
                         # \n) (case-sensitive) (with ^ and $
                         # matching normally) (matching whitespace
                         # and # normally)
<title>                  # '<title>'
.*?                      # any character (0 or more times (matching
                         # the least amount possible))
</title>                 # '</title>'