Swoole Event callback function cannot use global array what's going on?

, an array that is explicitly declared in the top-level scope is not called in the callback function of the OnMessage event, and each time a new array is reused and then manipulated, I tried the global keyword, and the use of the variable preceded by the & reference symbol does not work, What's the deal?

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, an array that is explicitly declared in the top-level scope is not called in the callback function of the OnMessage event, and each time a new array is reused and then manipulated, I tried the global keyword, and the use of the variable preceded by the & reference symbol does not work, What's the deal?

My understanding is that $server->on is called when the client sends the message. This means that the server will restart a process to process the business logic.
So, you define what global,use or whatever is not valid.

This is called process isolation. In fact Swoole official documents have said.

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