/**
     * 读取图片内容
     * 2020-9-1 16:02:27 lmy
     * @param $url
     * @return bool|string
     */
    public static function getCurl($url){
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL,$url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        $result = curl_exec($ch);
        curl_close ($ch);
        return $result;
    }