,所以我做未知修改错误
$subject = 'sakdlfjsalfdjslfad <a href="something/8230">lol is that true?</a> lalalala';
$subject = preg_replace('<a href="something\/([0-9]+)">(.+?)<\/a>', '$1', $subject);
echo $subject;
,从而客观上有$主题返回
'sakdlfjsalfdjslfad lol is that true? lalalala'
但随后PHP返回
warning: preg_replace(): Unknown modifier '('
我怎么做错了?