Php/docs/function.msg-stat-queue
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msg_stat_queue
(PHP 4 >= 4.3.0, PHP 5, PHP 7)
msg_stat_queue — Returns information from the message queue data structure
说明
msg_stat_queue
( SysvMessageQueue $queue
) : array|false
msg_stat_queue() returns the message queue meta data
for the message queue specified by the queue
.
This is useful, for example, to determine which process sent the message
that was just received.
参数
queue
- The message queue.
返回值
On success, the return value is an array whose keys and values have the following meanings:
msg_perm.uid
|
The uid of the owner of the queue. |
msg_perm.gid
|
The gid of the owner of the queue. |
msg_perm.mode
|
The file access mode of the queue. |
msg_stime
|
The time that the last message was sent to the queue. |
msg_rtime
|
The time that the last message was received from the queue. |
msg_ctime
|
The time that the queue was last changed. |
msg_qnum
|
The number of messages waiting to be read from the queue. |
msg_qbytes
|
The maximum number of bytes allowed in one message queue. On
Linux, this value may be read and modified via
|
msg_lspid
|
The pid of the process that sent the last message to the queue. |
msg_lrpid
|
The pid of the process that received the last message from the queue. |
Returns false
on failure.
更新日志
版本 | 说明 |
---|---|
8.0.0 | queue expects a SysvMessageQueue
instance now; previously, a resource was expected. |
参见
- msg_remove_queue() - Destroy a message queue
- msg_receive() - Receive a message from a message queue
- msg_get_queue() - Create or attach to a message queue
- msg_set_queue() - Set information in the message queue data structure