此擴展可從PHP腳本訪問消息傳遞和排隊系統的功能，例如IBM WebSphere MQSeries系列產品。該界面旨在使執行更常見的任務（例如將簡單的文本消息傳遞到隊列）極其簡單，同時仍然允許熟練的用戶執行更復雜的消息傳遞操作。對于許多用戶而言，設置眾多選項的復雜性可以簡單地忽略。 SAM擴展是一個框架，提供了非常簡單的API，可用于訪問許多消息傳遞中間件系統。當前，該軟件包包括對MQTT（MQ遙測傳輸）消息傳遞協議的內置支持以及對IBM Messaging and Queuing中間件產品的支持。SAM被設計為易于擴展以支持其他消息傳遞系統，并且擴展模塊可以用C或PHP編寫 簡單異步消息（SAM）允許PHP應用程序通過非常簡單的界面將消息發送和接收消息到許多不同的消息傳遞和排隊中間件系統 [https://pecl.php.net/package/sam](https://pecl.php.net/package/sam). * [預定義常量](https://www.php.net/manual/en/sam.constants.php) * [例子](https://www.php.net/manual/en/sam.examples.php) * [連接數](https://www.php.net/manual/en/sam.connections.php) * [留言內容](https://www.php.net/manual/en/sam.messages.php) * [消息傳遞操作](https://www.php.net/manual/en/sam.operations.php) * [發布/訂閱和訂閱主題](https://www.php.net/manual/en/sam.pubsub.php) * [錯誤處理](https://www.php.net/manual/en/sam.errors.php) * [SAM功能](https://www.php.net/manual/en/ref.sam.php) * [SAMConnection :: commit](https://www.php.net/manual/en/samconnection.commit.php)—提交（完成）當前工作單元 * [SAMConnection :: connect](https://www.php.net/manual/en/samconnection.connect.php)—建立與Messaging Server的連接 * [SAMConnection :: \_\_ construct](https://www.php.net/manual/en/samconnection.construct.php)—創建與Messaging Server的新連接 * [SAMConnection :: disconnect](https://www.php.net/manual/en/samconnection.disconnect.php)—與Messaging Server斷開連接 * [SAMConnection :: errno](https://www.php.net/manual/en/samconnection.errno.php)—包含上次執行的SAM操作的唯一數字錯誤代碼 * [SAMConnection :: error](https://www.php.net/manual/en/samconnection.error.php)—包含上一次失敗的SAM操作的文本描述 * [SAMConnection :: isConnected](https://www.php.net/manual/en/samconnection.isconnected.php)—查詢是否與Messaging Server建立連接 * [SAMConnection :: peek](https://www.php.net/manual/en/samconnection.peek.php)—從隊列中讀取消息而不將其從隊列中刪除 * [SAMConnection :: peekAll](https://www.php.net/manual/en/samconnection.peekall.php)—從隊列中讀取一個或多個消息，而不將其從隊列中刪除 * [SAMConnection :: receive](https://www.php.net/manual/en/samconnection.receive.php)—從隊列或訂閱中接收消息 * [SAMConnection :: remove](https://www.php.net/manual/en/samconnection.remove.php)—從隊列中刪除消息 * [SAMConnection :: rollback](https://www.php.net/manual/en/samconnection.rollback.php)—取消（[回滾](https://www.php.net/manual/en/samconnection.rollback.php)）正在進行的工作單元 * [SAMConnection :: send](https://www.php.net/manual/en/samconnection.send.php)—將消息發送到隊列或將項目發布到主題 * [SAMConnection :: setDebug](https://www.php.net/manual/en/samconnection.setdebug.php)—打開或關閉其他調試輸出 * [SAMConnection :: subscribe](https://www.php.net/manual/en/samconnection.subscribe.php)—創建對指定主題的訂閱 * [SAMConnection :: unsubscribe](https://www.php.net/manual/en/samconnection.unsubscribe.php)—取消對指定主題的訂閱 * [SAMMessage :: body](https://www.php.net/manual/en/sammessage.body.php)—消息的主體 * [SAMMessage :: \_\_ construct](https://www.php.net/manual/en/sammessage.construct.php)—創建一個新的Message對象 * [SAMMessage :: header](https://www.php.net/manual/en/sammessage.header.php)—消息的標題屬性