php微博的几个关键元素@#url正则

​解析@昵称

/.*@([^\s@]+?)[\s@]*.*/iu

解析#话题#

/.*#([^#]+?)#.*|/iu

解析url

/((https?|ftp|gopher|news|telnet|rtsp|mms|callto):\/\/|www\.)([a-z0-9\/\-_+=.~!%@?#%&;:$\\()|]+)/ie

这三个元素在微博里很重要哦

$post_content = "@oschina和@twitter在研究用#PHP#的#正则表达式#过滤话题和对象名";

$tag_pattern = "/\#([^\#|.]+)\#/";
preg_match_all($tag_pattern, $post_content, $tagsarr);
$tags = implode(',',$tagsarr[1]);

$user_pattern = "/\@([a-zA-z0-9_]+)/";
$post_content = preg_replace($user_pattern, '<a href="http://twitter.com/${1}">@${1}</a>', $post_content );
$post_content = preg_replace($tag_pattern, '<a href="http://twitter.com/search?q=#${1}">#${1}#</a>', $post_content);