# swoole\_atomic->add
增加計數
~~~
function swoole_atomic->add(int $add_value = 1)
~~~
* $add\_value要增加的數值，默認為1
* $add\_value必須為正整數
* $add\_value與原值相加如果超過42億，將會溢出，高位數值會被丟棄
* add方法操作成功后返回結果數值
- 序言
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- 為什么不要send完后立即close
- 如何在回調函數中訪問外部的變量
- 是否可以共用1個redis或mysql連接
- 關于onConnect/onReceive/onClose順序
- 4種PHP回調函數風格
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- 錯誤信息：ERROR (9006)
- eventLoop has already been created. unable to create swoole_server
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- PHP7+Swoole/Nginx/Golang性能對比
- 全球Web框架權威性能測試 Techempower Web Framework Benchmarks
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- Coroutine::set
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- Coroutine\Client->connect
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- 屬性列表
- Coroutine\Http\Client->get
- Coroutine\Http\Client->post
- Coroutine\Http\Client->upgrade
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- 屬性列表
- Coroutine\MySQL->connect
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- Server
- 并發調用
- setDefer 機制
- 子協程+通道
- 實現原理
- 協程與線程
- 發送數據協程調度
- 協程內存開銷
- 4.0 協程實現原理
- 協程客戶端超時規則
- 協程執行流程
- 常見問題
- 運行中出現 Fatal error: Maximum function nesting level of '1000' reached, aborting!
- 為什么只能在回調函數中使用協程客戶端
- 支持協程的回調方法列表
- 錯誤信息： XXXX client has already been bound to another coroutine
- Swoole4 協程與 PHP 的 Yield/Generator 協程有什么區別
- Swoole4 協程與 Go 協程有哪些區別
- 編程須知
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- 禁止使用協程 API 的場景（2.x 版本）
- 使用類靜態變量/全局變量保存上下文
- 退出協程
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- 擴展組件
- MongoDB
- 編程調試
- Runtime
- 文件操作
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- Timer
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- Memory
- Lock
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- Buffer
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- Table
- Table->__construct
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- Atomic
- swoole_atomic->__construct
- swoole_atomic->add
- swoole_atomic->sub
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- swoole_mmap::open
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- Channel->__construct
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- swoole_serialize::pack
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- Http\Server
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- Http\Response::create
- 配置選項
- upload_tmp_dir
- http_parse_post
- document_root
- http_compression
- 常見問題
- CURL發送POST請求服務器端超時
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- WebSocket\Server
- 回調函數
- onHandShake
- onOpen
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- 函數列表
- WebSocket\Server->push
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- WebSocket\Server::pack
- WebSocket\Server::unpack
- WebSocket\Server->disconnect
- WebSocket\Server->isEstablished
- 預定義常量
- 常見問題
- 配置選項
- WebSocket\Frame
- Redis\Server
- 方法
- Redis\Server->setHandler
- Redis\Server::format
- 常量
- Process
- Process::__construct
- Process->start
- Process->name
- Process->exec
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- Process->read
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- Process\Pool
- Process\Pool::__construct
- Process\Pool->on
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- Client
- 方法列表
- swoole_client::__construct
- swoole_client->set
- swoole_client->on
- swoole_client->connect
- swoole_client->isConnected
- swoole_client->getSocket
- swoole_client->getSockName
- swoole_client->getPeerName
- swoole_client->getPeerCert
- swoole_client->send
- swoole_client->sendto
- swoole_client->sendfile
- swoole_client->recv
- swoole_client->close
- swoole_client->sleep
- swoole_client->wakeup
- swoole_client->enableSSL
- 回調函數
- onConnect
- onError
- onReceive
- onClose
- onBufferFull
- onBufferEmpty
- 屬性列表
- swoole_client->errCode
- swoole_client->sock
- swoole_client->reuse
- 并行
- swoole_client_select
- TCP客戶端異步連接
- SWOOLE_KEEP建立TCP長連接
- 常量
- 配置選項
- ssl_verify_peer
- ssl_host_name
- ssl_cafile
- ssl_capath
- package_length_func
- http_proxy_host
- 常見問題
- Event
- swoole_event_add
- swoole_event_set
- swoole_event_isset
- swoole_event_write
- swoole_event_del
- swoole_event_exit
- swoole_event_defer
- swoole_event_cycle
- swoole_event_wait
- swoole_event_dispatch
- 常見問題
- epoll_wait 偶爾會用很長時間
- 異步回調
- 異步文件系統IO
- swoole_async_readfile
- swoole_async_writefile
- swoole_async_read
- swoole_async_write
- swoole_async_dns_lookup
- swoole_async::exec
- 異步MySQL客戶端
- swoole_mysql->__construct
- swoole_mysql->on
- swoole_mysql->connect
- swoole_mysql->escape
- swoole_mysql->query
- swoole_mysql->begin
- swoole_mysql->commit
- swoole_mysql->rollback
- swoole_mysql->close
- 異步Redis客戶端
- swoole_redis->__construct
- swoole_redis->on
- swoole_redis->connect
- swoole_redis->__call
- swoole_redis->close
- 異步Http/WebSocket客戶端
- swoole_http_client->__construct
- swoole_http_client->set
- swoole_http_client->setMethod
- swoole_http_client->setHeaders
- swoole_http_client->setCookies
- swoole_http_client->setData
- swoole_http_client->addFile
- swoole_http_client->get
- swoole_http_client->post
- swoole_http_client->upgrade
- swoole_http_client->push
- swoole_http_client->execute
- swoole_http_client->download
- swoole_http_client->close
- 異步Http2.0客戶端
- swoole_http2_client->__construct
- swoole_http2_client->get
- swoole_http2_client->post
- swoole_http2_client->setHeaders
- swoole_http2_client->setCookies
- 高級
- Swoole的實現
- Reactor線程
- Manager進程
- Worker進程
- Reactor、Worker、TaskWorker的關系
- Task/Finish特性的用途
- 在php-fpm或apache中使用swoole
- Swoole異步與同步的選擇
- TCP/UDP壓測工具
- swoole服務器如何做到無人值守100%可用
- MySQL的連接池、異步、斷線重連
- PHP中哪些函數是同步阻塞的
- 守護進程程序常用數據結構
- 隊列（Queue）
- 堆（Heap）
- 定長數組（SplFixedArray）
- 使用jemalloc優化swoole內存分配性能
- C開發者如何使用Swoole
- C++開發者如何使用Swoole
- 使用systemd管理swoole服務
- 網卡中斷設置
- 將Swoole靜態編譯內嵌到PHP
- 異步回調程序內存管理
- 日志等級控制
- 使用 asan 內存檢測
- Windows編譯
- Swoole協程之旅-前篇
- Swoole協程之旅-中篇
- Swoole協程之旅-后篇
- 協程CPU密集場景調度實現
- 其他
- 函數列表
- swoole_set_process_name
- swoole_version
- swoole_strerror
- swoole_errno
- swoole_get_local_ip
- swoole_clear_dns_cache
- swoole_get_local_mac
- swoole_cpu_num
- swoole_last_error
- Swoole社區
- Swoole技術會議
- 工作組（Working Groups）
- 參與開源項目指引
- 捐贈Swoole項目
- 加入Swoole開發組
- 非協程特性獨立擴展 （swoole_async）
- 附錄：Linux信號列表
- 附錄：Linux錯誤碼(errno)列表
- 附錄：Swoole錯誤碼列表
- 附錄：TCP連接的狀態
- 附錄：tcpdump抓包工具的使用
- 附錄：strace工具的使用
- 附錄：gdb工具的使用
- 附錄：lsof工具的使用
- 附錄：perf工具的使用
- 附錄：編譯PHP擴展的相關工具
- 備用：已移除的歷史特性
- swoole_server->handler
- task_worker_max
- swoole_server->addtimer
- swoole_server->deltimer
- onTimer
- swoole_timer_add
- swoole_timer_del
- swoole_get_mysqli_sock
- swoole_mysql_query
- onMasterConnect
- onMasterClose
- Nginx/Golang/Swoole/Node.js的性能對比
- Coroutine::call_user_func
- Coroutine::call_user_func_array
- Coroutine\Channel::select
- task_async
- 歷史：版本更新記錄（1.x）
- 1.10.3
- 1.10.2
- 1.10.1
- 1.10.0
- 1.9.23
- 1.9.22
- 1.9.19
- 1.9.18
- 1.9.17
- 1.9.16
- 1.9.15
- 1.9.14
- 1.9.12
- 1.9.11
- 1.9.9
- 1.9.7
- 1.9.6
- 1.9.5
- 1.9.4
- 1.9.3
- 1.9.2
- 1.9.1
- 1.9.0
- 1.8.13
- 1.8.12
- 1.8.11
- 1.8.10
- 1.8.9
- 1.8.8
- 1.8.7
- 1.8.6
- 1.8.5
- 1.8.4
- 1.8.3
- 1.8.2
- 1.8.1
- 1.8.0
- 1.7.22
- 1.7.21
- 1.7.20
- 1.7.19
- 1.7.18
- 1.7.17
- 1.7.16
- 1.7.15
- 1.7.14
- 1.7.13
- 1.7.12
- 1.7.11
- 1.7.10
- 1.7.9
- 1.7.8
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