com_message_pump

(PHP 4 >= 4.2.0, PHP 5, PHP 7)

com_message_pump — Process COM messages, sleeping for up to timeoutms milliseconds

说明

com_message_pump ([ int $timeoutms = 0 ] ) : bool

This function will sleep for up to timeoutms milliseconds, or until a message arrives in the queue.

The purpose of this function is to route COM calls between apartments and handle various synchronization issues. This allows your script to wait efficiently for events to be triggered, while still handling other events or running other code in the background. You should use it in a loop, as demonstrated by the example in the com_event_sink() function, until you are finished using event bound COM objects.

参数

timeoutms

The timeout, in milliseconds.

If you do not specify a value for timeoutms, then 0 will be assumed. A 0 value means that no waiting will be performed; if there are messages pending they will be dispatched as before; if there are no messages pending, the function will return FALSE immediately without sleeping.

返回值

If a message or messages arrives before the timeout, they will be dispatched, and the function will return TRUE. If the timeout occurs and no messages were processed, the return value will be FALSE.