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HomeBackend DevelopmentPHP TutorialPHP message queue usage example analysis

The examples in this article describe the usage of PHP message queue. Share it with everyone for your reference, the details are as follows:

This message queue is used for process communication under Linux

#根据路径和后缀创建一个id
$key = ftok(__DIR__, 'R');
#获取队列中的消息
$q = msg_get_queue($key);
#删除队列
msg_remove_queue($q);
#获取队列的状态信息
$status = msg_stat_queue($q);
print_r($status);
echo "\n";
for($i=0;$i1), true, false , $errorcode);
  var_dump($errorcode);
}
/**
接收消息
resource $queue , int $desiredmsgtype , int &$msgtype , int $maxsize , mixed &$message [, bool $unserialize = true [, int $flags = 0 [, int &$errorcode ]]] 
$desiredmsgtype:0表示从队列最前面开始返回数据, bigger 0:具体的某个队列
$maxsize:数据最大值,获取的消息如果》此值则出错
$msgtype:消息的具体类型, 因为$desiredmsgtype可以不指定类型,即指定为0
$flags:MSG_IPC_NOWAIT 如果队列为空直接返回(不阻塞), MSG_EXCEPT MSG_NOERROR 参见手册
*/
$data = msg_receive($q, 0, $type, 200, $msg);
var_dump($data);
echo "\n";
var_dump($type);
echo "\n";
var_dump($msg);
echo "\n";

Queue status information: For specific reference manual

Array
(
[msg_perm.uid] => 1015
[msg_perm.gid] => 100
[msg_perm.mode] => 438
[msg_stime] => 0
[msg_rtime] => 0
[msg_ctime] => 1411830331
[msg_qnum] => 0
[msg_qbytes] => 65536
[msg_lspid] => 0
[msg_lrpid] => 0
)

Use the ipc command to view it under Linux. The ipcrm command can be deleted

Readers who are interested in more PHP-related content can check out the special topics of this site: "Introduction Tutorial on PHP Basic Syntax", "Summary of PHP Error and Exception Handling Methods", "Summary of PHP Programming Algorithms" and " PHP object-oriented programming introductory tutorial"

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