if (!function_exists('base64_image_content')) {
    /**
     * 处理base64格式图片存致本地
     * 本地存放位置  /static/upload/日期/文件
     * @param $base64_image_content string base64图片
     * @param $file string 保存的路径
     * @return bool|string 成功返回图片web路劲
     */
    function base64_image_content($base64_image_content, $file, $is_temp = false, $check_size = 0)
    {
        //匹配出图片的格式
        if (preg_match('/^(data:\s*image\/(\w+);base64,)/', $base64_image_content, $result)) {
            if ($is_temp) {
                $new_file = tempnam(sys_get_temp_dir(), 'k');
                if (file_put_contents($new_file, base64_decode(str_replace($result[1], '', $base64_image_content)))) {
                    $img_content = @file_get_contents($new_file);
                    if ($check_size > 0 && strlen($img_content) > $check_size) {
                        return false;
                    }
                    return $new_file;
                } else {
                    return false;
                }
            }
            $type = $result[2];
            $new_file = ROOT_PATH . $file;
            if (!file_exists($new_file)) {
                //检查是否有该文件夹，如果没有就创建，并给予最高权限
                mkdir($new_file, 0777, true);
            }
            list($msec, $sec) = explode(' ', microtime());
            $msectime =  (float)sprintf('%.0f', (floatval($msec) + floatval($sec)) * 1000);
            $now = $msectime . rand(10000, 99999);
            $new_file = $new_file . $now . ".{$type}";
            $file_dir = $file . $now . ".{$type}";
            if (file_put_contents($new_file, base64_decode(str_replace($result[1], '', $base64_image_content)))) {
                return $file_dir;
            } else {
                return false;
            }
        } else {
            return false;
        }
    }
}