Regular expression: Difference between revisions

Regular expression (edit)

594 bytes removed , 20 September 2016

15,041

edits

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 === 尋找 Hashtag ===
-什麼是 [https://zh.wikipedia.org/wiki/%E4%B8%BB%E9%A1%8C%E6%A8%99%E7%B1%A4 主題標籤] (Hashtag)
+[[Extract all hashtags from text]]
-* 因為連結包含 # 符號，所以需要事先處理。
-* PHP code<ref>[http://stackoverflow.com/questions/3060601/retrieve-all-hashtags-from-a-tweet-in-a-php-function regex - Retrieve all hashtags from a tweet in a PHP function - Stack Overflow]</ref>:
-<pre>
-preg_match_all("/(#[^\s|\-|,|\"|，|\[|\]|『|』|／|~|(|)|（|）|【|】|《|》|－|「|」|！|!|、|？|：|…|:|#|\.|．|。|?]+)/ui", $string, $matches);
-</pre>
-* 還需要處理以下狀況
-<pre>
-illegal
-#12345
-#___
-#_
-#__123
-legal
-#1_abc
-#_abc
-</pre>
 == Search unmatched string ==