msg_send
(PHP 4 >= 4.3.0, PHP 5, PHP 7)
msg_send — Send a message to a message queue
说明
$queue
,
int $msgtype
,
mixed $message
[,
bool $serialize
= TRUE
[,
bool $blocking
= TRUE
[,
int &$errorcode
]]] ) :
bool
msg_send() sends a message
of type msgtype
(which MUST be greater than 0) to the message queue specified by queue
.
参数
-
queue
-
-
msgtype
-
-
message
-
-
serialize
-
The optional
serialize
controls how themessage
is sent.serialize
defaults toTRUE
which means that themessage
is serialized using the same mechanism as the session module before being sent to the queue. This allows complex arrays and objects to be sent to other PHP scripts, or if you are using the WDDX serializer, to any WDDX compatible client. -
blocking
-
If the message is too large to fit in the queue, your script will wait until another process reads messages from the queue and frees enough space for your message to be sent. This is called blocking; you can prevent blocking by setting the optional
blocking
parameter toFALSE
, in which case msg_send() will immediately returnFALSE
if the message is too big for the queue, and set the optionalerrorcode
toMSG_EAGAIN
, indicating that you should try to send your message again a little later on. -
errorcode
-
返回值
成功时返回 TRUE
, 或者在失败时返回 FALSE
。
Upon successful completion the message queue data structure is updated as follows: msg_lspid
is set to the process-ID of the calling process, msg_qnum
is incremented by 1 and msg_stime
is set to the current time.
参见
- msg_remove_queue() - Destroy a message queue
- msg_receive() - Receive a message from a message queue
- msg_stat_queue() - Returns information from the message queue data structure
- msg_set_queue() - Set information in the message queue data structure