Php正则表达式处理微博中的话题和对象名

PHP：正则表达式处理微博中的话题和对象名

转自：http://www.oschina.net/code/snippet_54100_3411

$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);