app消息推送 极光推送 文档：https://docs.jiguang.cn/jpush/server/push/server_overview sdk: https://github.com/jpush/jpush-api-php-client 个推推送 文档: https://docs.getui.com/getui/server/rest_v2/introduction/ sdk: https://github.com/GetuiLaboratory/getui-pushapi-php-client-v2