Retrieve all hashtags from a tweet in a PHP function

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I created my own solution. It does:

  • Finds all hashtags in a string
  • Removes duplicate ones
  • Sorts hashtags regarding to count of the existence in text

  • Supports unicode characters

    function getHashtags($string) {  
    $hashtags= FALSE;  
    preg_match_all("/(#\w+)/u", $string, $matches);  
    if ($matches) {
        $hashtagsArray = array_count_values($matches[0]);
        $hashtags = array_keys($hashtagsArray);
    }
    return $hashtags;
}

Output is like this:

(
    [0] => #_ƒOllOw_
    [1] => #FF
    [2] => #neslitükendi
    [3] => #F_0_L_L_O_W_
    [4] => #takipedeğerdost
    [5] => #GönüldenTakipleşiyorum
)

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