sistema di tag twitter like

[freenetw]

Ho corretto così, ma in pratica mi riconosce i tag, ma non mette il relativo link al profilo:

public function GetTag ($text) {
        $matches = array();
          $replacements = array();
          preg_match_all('/#([^\s]+)/', $text, $matches);
        
        $this->DBConnect();
        $sql = mysql_query("SELECT * FROM users");
        while ($rows = mysql_fetch_array($sql)) {
            for ($j = 0, $c = count($matches[1]); $j < $c; $j++) {
                $str = strtolower(str_replace(' ', '', $this->GetNameSurname($rows['id'])));
                if ($str == $matches[1][$j]) {
                    $replacements[$j] = "[url='profile.php?user=".$rows[']".$this->GetNameSurname($rows['id'])."[/url]";
                } else {
                    $replacements[$j] = $matches[1][$j];
                }
            }
        }
        for ($j = 0, $c = count($matches[1]); $j < $c; $j++)
            $text = str_replace($matches[1][$j], $replacements[$j], $text);

          return $text;
        
    }