Reads the next frame

# Stomp::readFrame

# stomp_read_frame

(PECL stomp >= 0.1.0)

Stomp::readFrame -- stomp_read_frame — Reads the next frame

### 说明

面向对象风格 (method):

public function Stomp::readFrame(string `$class_name` = "stompFrame"): stompframe

过程化风格:

function stomp_read_frame(resource `$link`): array

Reads the next frame. It is possible to instantiate an object of a specific class, and pass parameters to that class's constructor.

### 参数

`link`
  仅对过程化样式：由 stomp_connect() 返回的 stomp 连接标识符。
`class_name`
  The name of the class to instantiate. If not specified, a stompFrame object is returned.

### 返回值

> 注意: A transaction header may be specified, indicating that the message acknowledgment should be part of the named transaction.

### 更新日志

版本 | 说明
--- | ---
PECL stomp 0.4.0 | `class_name` parameter was added.

### 示例

示例 #1 面向对象风格

    <?php

    /* connection */
    try {
        $stomp = new Stomp('tcp://localhost:61613');
    } catch(StompException $e) {
        die('Connection failed: ' . $e->getMessage());
    }

    /* subscribe to messages from the queue 'foo' */
    $stomp->subscribe('/queue/foo');

    /* read a frame */
    var_dump($stomp->readFrame());

    /* close connection */
    unset($stomp);

    ?>

以上示例的输出类似于：

    object(StompFrame)#2 (3) {
      ["command"]=>
      string(7) "MESSAGE"
      ["headers"]=>
      array(5) {
        ["message-id"]=>
        string(41) "ID:php.net-55293-1257226743606-4:2:-1:1:1"
        ["destination"]=>
        string(10) "/queue/foo"
        ["timestamp"]=>
        string(13) "1257226805828"
        ["expires"]=>
        string(1) "0"
        ["priority"]=>
        string(1) "0"
      }
      ["body"]=>
      string(3) "bar"
    }

示例 #2 过程化风格

    <?php

    /* connection */
    $link = stomp_connect('ssl://localhost:61612');

    /* check connection */
    if (!$link) {
        die('Connection failed: ' . stomp_connect_error());
    }

    /* subscribe to messages from the queue 'foo' */
    stomp_subscribe($link, '/queue/foo');

    /* read a frame */
    $frame = stomp_read_frame($link);

    /* close connection */
    stomp_close($link);

    ?>

以上示例的输出类似于：

    array(3) {
      ["command"]=>
      string(7) "MESSAGE"
      ["body"]=>
      string(3) "bar"
      ["headers"]=>
      array(6) {
        ["transaction"]=>
        string(2) "t1"
        ["message-id"]=>
        string(41) "ID:php.net-55293-1257226743606-4:3:-1:1:1"
        ["destination"]=>
        string(10) "/queue/foo"
        ["timestamp"]=>
        string(13) "1257227037059"
        ["expires"]=>
        string(1) "0"
        ["priority"]=>
        string(1) "0"
      }
    }

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