src/Broadcast/Broadcast.php
public function previewText($message, $to, $by = self::PREVIEW_BY_OPENID)
    {
        return $this->preview(self::MSG_TYPE_TEXT, $message, $to, $by);
    }
public function previewText($message, $to, $by = self::PREVIEW_BY_OPENID)
    {
        return $this->preview(self::MSG_TYPE_TEXT, $message, $to, $by);
    }
public function previewText ( $ message , $ to , $ by = self :: PREVIEW_BY_OPENID ) { return $ this -> preview ( self :: MSG_TYPE_TEXT , $ message , $ to , $ by ) ; }
Preview a text message.

@param mixed  $message message
@param string $to
@param string $by

@return mixed
Preview a text message .