sapi_windows_set_ctrl_handler()

(PHP 7 >= 7.4.0)

Set or remove a CTRL event handler

说明

Sets or removes aCTRLevent handler, which allows Windows CLI processes to intercept or ignoreCTRL+CandCTRL+BREAKevents. Note that in multithreaded environments, this is only possible when called from the main thread.

参数

A callback function to set or remove. If set, this function will be called whenever aCTRL+CorCTRL+BREAKevent occurs. The function is supposed to have the following signature:handler(int $event): void$eventTheCTRLevent which has been received;eitherPHP_WINDOWS_EVENT_CTRL_CorPHP_WINDOWS_EVENT_CTRL_BREAK.Setting aNULL$callablecauses the process to ignoreCTRL+Cevents, but notCTRL+BREAKevents.

IfTRUE, the handler is set.IfFALSE, the handler is removed.

返回值

成功时返回TRUE，或者在失败时返回FALSE。

范例

Basicsapi_windows_set_ctrl_handler()Usage

This example shows how to interceptCTRLevents.

参见

• sapi_windows_generate_ctrl_event()Send a CTRL event to another process

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