在 PHP 函数中从推文中检索所有主题标签

2021-12-25 00:00:00 regex twitter php

我想使用 PHP 函数从推文中检索所有主题标签.

I want to retrieve all hashtags from a tweet using a PHP function.

我知道有人在这里问过类似的问题，但没有提示如何在 PHP 中实现这一点.由于我对正则表达式不是很熟悉，不知道如何编写一个函数来返回推文中所有主题标签的数组.

I know someone asked a similar question here, but there is no hint how exactly to implement this in PHP. Since I'm not very familiar with regular expressions, don't know how to write a function that returns an array of all hashtags in a tweet.

那么我该怎么做，使用以下正则表达式:

So how do I do this, using the following regular expression:

#S*w

推荐答案

$tweet = "this has a #hashtag a  #badhash-tag and a #goodhash_tag";

preg_match_all("/(#w+)/", $tweet, $matches);

var_dump( $matches );

*破折号是标签的非法字符，允许使用下划线.

*Dashes are illegal chars for hashtags, underscores are allowed.

相关文章