SAM 函数
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SAMConnection->peek

(No version information available, might be only in CVS)

SAMConnection->peek Read a message from a queue without removing it from the queue.

说明

SAMConnection
SAMMessage peek ( string $target [, array $properties ] )

参数

target

The identity of the queue from which to peek the message.

properties

An optional associative array of properties describing other parameters to control the peek operation.

Property name Possible values
SAM_CORRELID This is the target correlation id string of the message. This would typically have been returned by a "send" request.
SAM_MESSAGEID This is the message id string of the message which is to be peeked.

返回值

This method returns a SAMMessage object or FALSE if an error occurs.

范例

Example #1 Retrieve the next message from a queue without removing it

<?php
$msg 
$conn->peek('queue://receive/test');

if (!
$msg) {
  
// The peek failed!
  
echo "Peek failed ($conn->errno$conn->error";
}
?>

Example #2 Retrieve a specific message from a queue without removing it from the queue

<?php

$msg 
$conn->peek('queue://receive/test', array(SAM_MESSAGEID => $messageId));

?>

参见


SAM 函数
php 手册 | 脚本学堂 | 脚本编程 | 网站编程 | 系统管理 | 服务器配置 | 数据库管理 | Php教程 | python教程 | 正则表达式 | 批处理脚本 | Centos教程 | Linux基础教程